The text for today's message is Luke 11:37-52.

Before we read, remember that Jesus just taught His disciples how to pray and emphasized the value of praying for the Spirit. Then, Jesus cast out a demon by the finger of God, the Holy Spirit, He was accused of doing so by Satan. Jesus warned them that the kingdom of God had come upon them in Him. To reject Him, they would bring about terrible judgment. Still, many demanded a sign. But Jesus promised only one: the sign of Jonah…His death and resurrection. Though Jesus’ works were clear, their inner darkness blinded them.

Today’s passage shows the intensification of conflict between Jesus and the religious leaders that would soon lead to His death in fulfillment of His Exodus that He declared to Moses and Elijah on the Mount of Transfiguration.

Luke shows the original audience that judgment awaits those whose external actions, even religious ones, don’t stem from a clean heart. Only the person of Jesus can align both our hearts and our lives. No amount of self-righteousness and self-dependence will get us there.

The reason that this is so important is because all of us naturally try to be clean in our own power. Yet, the law which thunders from Mt. Sinai says that to be clean we must love God with all our being and our neighbors as ourselves. This is impossible for us. We might clean up many of our external actions and religious habits, but our hearts remain like tombs….full of death. When we are being honest with ourselves, the guilt and shame of this reality of this weighs on us.

But what if instead of living under the shadow of Sinai, trying to prove ourselves, we lived from a heart made clean? Imagine the peace in your soul. The freedom in your mind. The joy in your steps. It would change everything!

If you would like to experience these things, you’ll want to listen carefully to Luke 11:37-52.

Luke 11:37–52 ESV

While Jesus was speaking, a Pharisee asked him to dine with him, so he went in and reclined at table. The Pharisee was astonished to see that he did not first wash before dinner. And the Lord said to him, “Now you Pharisees cleanse the outside of the cup and of the dish, but inside you are full of greed and wickedness. You fools! Did not he who made the outside make the inside also? But give as alms those things that are within, and behold, everything is clean for you. “But woe to you Pharisees! For you tithe mint and rue and every herb, and neglect justice and the love of God. These you ought to have done, without neglecting the others. Woe to you Pharisees! For you love the best seat in the synagogues and greetings in the marketplaces. Woe to you! For you are like unmarked graves, and people walk over them without knowing it.” One of the lawyers answered him, “Teacher, in saying these things you insult us also.” And he said, “Woe to you lawyers also! For you load people with burdens hard to bear, and you yourselves do not touch the burdens with one of your fingers. Woe to you! For you build the tombs of the prophets whom your fathers killed. So you are witnesses and you consent to the deeds of your fathers, for they killed them, and you build their tombs. Therefore also the Wisdom of God said, ‘I will send them prophets and apostles, some of whom they will kill and persecute,’ so that the blood of all the prophets, shed from the foundation of the world, may be charged against this generation, from the blood of Abel to the blood of Zechariah, who perished between the altar and the sanctuary. Yes, I tell you, it will be required of this generation. Woe to you lawyers! For you have taken away the key of knowledge. You did not enter yourselves, and you hindered those who were entering.”

What we see in this passage is that…

God calls His people to be clean by loving Him and doing justice from His power

We see this in verses 37-38, 42, and 52.

First, in verses 37-38, Jesus refuses to perform the ritual washings which the religious leaders of the day did to honor tradition. This tradition wasn’t about good hygiene, but about ritual purity. Doing so was a symbol of separation from the “unclean” world, especially Gentiles. So why did Jesus refuse? A few reasons: 1) It wasn’t commanded in the law; 2) He had no need to be cleansed, He was perfect; 3) His authority as the Son of God transcended such traditions of men; 4) He was showing them that true holiness doesn’t come from external ritual, but from being cleaned on the inside, by an inward light (v. 35) that only He can provide. Since by nature we are inwardly dark, we need Jesus, the Light of the world to shine in us.

Second, in verses 39-42, Jesus reveals that God, the maker of both body and soul, requires both justice toward others and love of God, not just surface-level obedience like ritual washings, giving to others in need, and giving a tenth of everything you own to God. Though Jesus makes it clear that we ought to do these things, He explains that God desires all we do to flow from Him as our source. This was the heart of the law given at Sinai: love God with all your heart, soul, mind, and strength, and love your neighbor as yourself. But that kind of love isn’t possible in our own power.

Third, in verse 49-52, Jesus declares Himself as the Wisdom of God and the Key of Knowledge. I believe that the quote about prophets and apostles being killed and persecuted in verse 49 is from Him. He will send them to Jerusalem, Judea, Samaria, and the ends of the earth, and they will be persecuted and killed.

We also see that Jesus is the One Abel’s sacrifice foreshadowed and Zechariah died honoring. Jesus is the Key of David, the Door to true knowledge. All the treasures of wisdom and knowledge are found in Him.

In all these verses, there is a cry, not for more religious activity, but for cleanness of heart. A life that loves God and does justice from the inside out. But this is impossible without entering through the Door, Jesus, using the Key, Jesus, empowered by the Spirit that He gives. To be told to love God and do justice without Jesus is not good news. It’s terrible news.

And that’s what John Bunyan helps us see in Pilgrim’s Progress. When Christian receives direction from Evangelist, he sets off with the heavy burden of sin still strapped to his back. Evangelist points him to the Wicket Gate, where he will eventually find relief. But soon, Christian is sidetracked by a man named Mr. Worldly Wiseman, who tells him he can get rid of the burden without all the hardship by visiting Mr. Legality in the village of Morality.

So Christian turns off the narrow path and begins climbing toward Mount Sinai. But as he nears the mountain, the law thunders: ‘Obey perfectly!’ But instead of lifting his burden, it only grows heavier, crushing him with guilt and fear.

You see, the law cannot remove the burden. It cannot cleanse the heart. It can only demand: “Do this and live.” And for sinners like us, the consequence of failure is death. The law reveals our guilt, but it cannot carry it.

And yet, even though we know this is true…

We attempt to be clean by loving God and serving others in our own power

At the core of our being, we prefer power and provision over weakness and need. Whether it is a position at work or a life of ease, we like doing things ourselves. This is why we naturally cling to what we can do, see, and be praised for. The Pharisees and the Law-experts typify this. They are like the foil in a good book, they show the opposite of what God made us to be. The Pharisees and Law-experts were deeply concerned with public honor and religious status, but Jesus's words reveal their inner guilt and bring them shame. They sought glory for themselves, but Jesus exposes their true, wicked hearts and the heavy burden of guilt they carry.

The Pharisees were zealous for ritual purity and strictly obeyed tradition, thinking this would hasten the arrival of God’s kingdom. The Law-experts were theologians who expanded the Mosaic law into a burdensome set of traditions. In this passage, Jesus reveals how empty these things are without God’s power.

In verses 39-40, the Pharisees obsess over outward cleanliness while their hearts are completely filthy. They are like cups that are spotless on the outside but filled with filth, rot, and mold on the inside. They perform rituals after being in public, but always carry within themselves greedy and wicked hearts. Jesus calls them fools, because they think the God who made them cannot see into their filthy hearts.

In verses 42-44, they try to keep the law of God without loving Him.  They give money to God but neglect giving justice to the ones He made. They usurp God’s glory and honor by trying to get it from people. By their actions, they teach others to rely on human power through religious observance, corrupting their hearers. Just like the law taught that touching a corpse would make one unclean, so they, dead in their sins, defile others by their very presence. Like unmarked graves they contaminate everyone they touch with a false religion based upon pride and not Christ.

In verses 46 and 52, the Law-experts claim to honor God’s messengers like Abel and Zecharaiah, the first and last martyr in the Hebrew ordering of the Bible, but reject the very Word of God, Jesus, God’s message. Claiming to be light-bearers, upholding the prophet’s message, they reject Christ, who was the true meaning behind all the types and shadows, and in doing so, they snuff out the Light of the world. Because they reject Christ, the Door, the key of David, and the One in whom all the treasures of wisdom and knowledge are found, they are locked out of the kingdom, which is Christ, and they lock others out as well.

But we aren’t that different. We seek God’s approval through appearance rather than His transformation. We serve without love, give without joy, and seek glory for ourselves instead of Christ. Like Adam and Eve, we grasp for god-like control, deciding for ourselves what is good and evil. When we do, we reject Jesus as the true Light, Wisdom, and Key.

This kind of false religion isn't new. Bunyan captures it vividly in Pilgrim’s Progress. Christian meets two men, Formalist and Hypocrisy, who bypass the Wicket Gate and climb over the wall into the path. They’re from the town of Vainglory, where tradition teaches shortcuts. They looked the part but never felt their need or bore the burden of their sin. And because they never entered through the Wicket Gate, through Christ, they were never cleansed. Their religion is outward, but their hearts remain unchanged.

There is no true cleanness, no true entrance, no true progress without coming to Christ through the narrow gate. You see…

Jesus, through the power of the cross, became our uncleanness so that we could be made clean…inside and out

Bunyan, in Pilgrim’s Progress, beautifully illustrates this. After feeling the crushing weight of the law and being misled toward Mt. Sinai by Worldly Wiseman, Christian is rescued by Evangelist and set back on the narrow way. After passing through the Wicket Gate, he journeys on until he comes to the cross. There, the heavy burden of guilt and sin falls from his back and rolls away into the empty tomb. He is free…free to love, free to obey, free to follow God. And though he stumbles and suffers, Christian spends the rest of his journey clinging to the grace that first set him free, reminding others and being reminded himself that Christ alone saves and empowers us to live for Him.

When we look at verses 37-38, we see that Jesus is our cleansing. He removes the crushing weight of the law by fulfilling it. To remind us of what I said earlier, Jesus didn’t perform the ceremonial washings because they weren’t commanded by God’s law, and more importantly, He had no need to be cleansed, He was already clean, both inside and out. As the truly clean One, He confronts our obsession with external purity and offers us inward cleansing by His blood.

In verse 42, we see that Jesus fulfills the justice and love of God that God requires by giving Himself for us to settle God’s justice as He bore our defilement in His death and gives us His righteousness through His resurrection which enables our Spiritual rebirth. Through this exchange, our sin is counted as His, and His life of justice, holiness, and love is counted as ours. This is what true cleanness looks like, not just external acts, but the inner renewal He provides.

We see this as clearly in verses 47-51. Here Jesus takes our guilt for rejecting God and not loving Him. As the ultimate Prophet whom all the prophets pointed to, Jesus was persecuted and ultimately killed, not only by sinners but for sinners, to take upon Himself the guilt of rejecting God and His Word. His blood is the climactic blood, not crying for vengeance like Abel’s, but offering mercy.

Finally, in verse 52 we see Jesus as the Key of Knowledge who opens access to God by giving Himself and then making His home in us. Jesus is both the Door and the Key, and in Him are all the treasures of wisdom and knowledge, for He Himself is the Wisdom and power of God. And this is the key…Jesus is the wisdom and power of God who makes us clean and enables us to live in His power.

Here, then, is the heart of the gospel revealed in this passage: Jesus’ blood is the better Word that speaks; while Abel’s and Zechariah’s blood demand justice against their perpetrators, Jesus’ blood cries out for forgiveness as His blood is spilled to atone for our sins. His blood is the better Word…one that speaks peace, not vengeance. Jesus' death and resurrection fulfill the Father’s plan, and through this exchange, He secures our righteousness and gives us His Spirit, so that we might walk in newness of life. This divine work is the Father’s love, the Son's perfect sacrifice, and the Spirit's power all working together for our cleansing.

Jesus is the key of knowledge, the key of David, who through His person and work, opens life and the ability to love God and fulfill justice for our neighbors

Through His death, He bore the curse of our pride, hypocrisy, and self-justification. Through His resurrection, He now gives us His Spirit so that…

By the power of His Spirit, we now live in cleanness, not from our effort, but from our union with Christ

After coming to the cross and laying down his burden, Christian is welcomed into the Palace Beautiful, where he is refreshed, encouraged, and equipped. He is freely given all he needs for the journey. This is a vivid picture of how Christ, through our union with Him, supplies us with all spiritual blessings. These gifts, His Word, His Spirit, the sacraments, prayer, and the fellowship of the church, are the means of grace by which we are strengthened for the journey. Christ not only cleanses us and gives us a new heart; He equips us to walk in newness of life. From this new, clean heart, we now live in and through Christ in all things.

When we look at our passage, we see what Jesus expects and what He provides after He has renewed the inside (our heart) and outside (our deeds) by grace:

• In verses 40–41, we see how everything becomes clean in Christ. How? Because we live and move and have our being in Him, and since we truly are in Him and He in us, we live in His power.
• In verse 42, we see how we live just and loving lives not from moral effort, but from hearts transformed by Jesus’ justice and love.
• In verse 52, we see how when we walk through the Door (Christ), using Him as the Key of all knowledge, He is the source of obedience and life.

But what does this mean practically? Quite frankly, it means we live out of Christ’s power and motivation by the Spirit. The Spirit is not just a motivator; He is the power source. He uses the means of grace, Scripture, prayer, and the sacraments, to conform us to Christ's image. So when we pray, we ask the Spirit to illuminate Christ's truth to us. When we take communion, we are reminded of the finished work of Christ. From this new, clean heart, we now live in and through Christ in all things.

In our Worship and Discipleship:

• When we prepare for church or small group, we don’t just show up…we remember why we’re coming. We’re not performing; we’re responding to grace. Because Christ has cleansed both our hearts and our actions, we want both to be shaped by His love.
• And when we disciple our children, we aim for more than external obedience. We want their hearts captured by God’s love…because He first loved us. That’s what truly changes us.

In our Counseling and Correction:

• When we counsel someone caught in sin, we don’t add extra rules or fences. We point them to Christ…the only One who cleanses and empowers lasting change.
• And when we correct a brother or sister, we want to make following Jesus clearer, not harder. We don’t want to load others with burdens Christ never gave.

All in Humility and Witness:

• When we speak about Scripture, we don’t try to sound more spiritual than we are. We ask: Are we living this? Christ isn’t just in the Bible…He is the Key, the Door, the Light. He’s everything.
• And when we share truth with others, we give them Jesus, God’s wisdom and power.

This is the difference between a life of religious performance and a life of joyful, Spirit-empowered obedience. It’s not “obedience to stay clean”, it’s living as one who has been made clean.

• So if you’re crushed under the weight of God’s law, come to Christ. His blood cleanses. His Spirit gives life.
• And if you feel nothing, if your heart is cold or proud, ask God to open your eyes. Don’t sit in the dark. The mountain is thundering, but Christ is calling.

Go from this place knowing that, where we fail to love God from the heart and do justice with clean hands, Jesus fulfills the law in perfect purity, justice, and sacrificial love. But this isn’t just an idea…He gives us His righteousness and His Spirit, so that we might walk in the same, all to the glory of the Father.