John the Baptist points to Jesus and says, “Behold, the Lamb of God, who takes away the sin of the world!” (John 1:29). In context, John links this identification with the Spirit remaining on Jesus and calls him “the Son of God” (John 1:29–34).
In John 1:29–34, John the Baptizer publicly points to Jesus as he approaches and gives him a striking title. John then explains why he has been baptizing: his work was meant to bring the coming figure into view for Israel. He reports a sign he witnessed—the Spirit coming down and staying on Jesus—and connects that sign to what God had told him beforehand. This scene follows the earlier questioning of John by religious representatives and his insistence that he is not the central figure, but a voice preparing the way. The narrative moves day by day, shifting from John’s self-description to his direct identification of Jesus.
John’s account presents John the Baptizer as a public witness whose job is to point away from himself and toward Jesus. The scene is built around what John says out loud (“Lamb of God,” “Son of God”) and what John says he saw (the Spirit descending and remaining).
A careful answer keeps the immediate passage, the book's argument, and the whole-Bible storyline together, so the question is answered in context instead of as a detached idea.
Start with John 1:29, then read the surrounding section so the answer stays connected to the passage's flow.
29On the next day, he saw Jesus coming to him, and said, "Behold, the Lamb of God, who takes away the sin of the world!