John 7

14 But now about the middle of the feast Jesus went up into the temple and began to teach. 15 And the Jews were marveling, saying, "How has this Man become learned, since He has not been educated?"

16 Therefore Jesus answered them and said, "My doctrine is not Mine, but His who sent Me. 17 If anyone desires to do His will, he will know about the doctrine, whether it is from God, or whether I am speaking on My own authority. 18 He who speaks from himself is seeking his own glory; but He who seeks the glory of the One who sent Him is true, and there is no unrighteousness in Him.