Because Jesus was historical, fulfilled the OT promises and prophesies, and is the Son of God; we can put all our trust in him instead of ourselves.
Jesus is the Christ who was promised, who perfectly pleased God in all that he did, and so the Father poured out the Spirit upon Jesus to enable him to do his ministry of reconciling us to God.
The message of the coming judgment of God is good news to those who mourn over their sin and embrace the reality that Jesus lived, died, and rose again to cleanse us of our sin and make us a holy people.
In order to remove our sorrow, warring and guilt, God’s good news is that he sent his Son to bring us joy, peace and his favor.
Jesus’ birth is part of the final stages of God’s plan of salvation for his people. Jesus is the mighty One who can deliver us from our sins.
Jesus is the Savior of the world, especially for the weak, humble, and broken. Jesus came to save those who need a Savior.