Sufficiency of Scripture

But when it was now the midst of the feast Jesus went up into the temple, and began to teach. The Jews then were astonished, saying, “How has this man become learned, having never been educated?” So Jesus answered them and said, “My teaching is not Mine, but His who sent Me. If anyone is willing to do His will, he will know of the teaching, whether it is of God or whether I speak from Myself. He who speaks from himself seeks his own glory; but He who is seeking the glory of the One who sent Him, He is true, and there is no unrighteousness in Him.

John 7:14-18