What does the Bible say about John the Baptist's message?

John the Baptist's message, as recorded in the Gospels, was to prepare the people for the coming Messiah, Jesus Christ. He preached a baptism of repentance for the remission of sins, highlighting that no amount of good works could redeem them; rather, they must trust in God's promised salvation through Christ. The core of John's message was to point towards Jesus and declare Him as the Lamb of God who takes away the sins of the world, affirming that salvation is found solely in Him, as established throughout scripture from Genesis to Revelation.