'Baptize' in the Bible

Again they questioned him. "Why then do you baptize," they said, "if you are neither the Christ nor Elijah nor the Prophet?"

"I baptize in water only," John answered, "but in your midst stands One whom you do not know--

I did not yet know Him, but He who sent me to baptize in water said to me, "'The One on whom you see the Spirit coming down, and remaining, He it is who baptizes in the Holy Spirit.'

though Jesus Himself did not baptize them, but His disciples did--