Luke Chapter 3 opens with John the Baptist preaching in the wilderness, calling on people to repent and prepare the way for the Messiah. He announces that the coming one will baptize with the Holy Spirit and with fire. John rebukes the Pharisees and Sadducees for their hypocrisy and warns of the coming judgment. Later, Jesus is baptized by John, and a voice from heaven proclaims him as the beloved Son of God. The chapter also includes a genealogy of Jesus back to Adam, demonstrating his human lineage.