They came to John, and said to him, "Rabbi, he who was with you beyond the Jordan, to whom you have testified, behold, the same baptizes, and everyone is coming to him."
He said, Are you a teacher of Israel, and don't you know these things? Verily, verily, I say unto you, I am speaking of those things that I know, and I am testifying of those things that I have seen; and you do not receive my witness. If I have talked to you about earthly things, and you did not believe, how will you believe, if I tell you of heavenly things? ( John 3:10-12 )