John 5:33
You yourselves sent to John, and he has testified to the truth.
John 1:6-8
There appeared a man named John, sent from God.
John 1:15-27
John testified to Him and cried out, for this was the one who said, "The One who is coming after me has been put before me, because He existed before me."
John 1:29-34
The next day John saw Jesus coming toward him, and he said, "Look! He is the Lamb of God who is to take away the world's sin.
John 3:26-36
And they went to John and said to him, "Teacher, the man who was with you on the other side of the Jordan, to whom you bore testimony yourself, is baptizing people and everybody is going to Him."