John 7:14-18

7:14 When the feast was half over, Jesus went up to the temple courts and began to teach. 15 Then the Jewish leaders were astonished and said, “How does this man know so much when he has never had formal instruction?” 16 So Jesus replied, “My teaching is not from me, but from the one who sent me. 17 If anyone wants to do God’s will, he will know about my teaching, whether it is from God or whether I speak from my own authority. 18 The person who speaks on his own authority desires to receive honor for himself; the one who desires the honor of the one who sent him is a man of integrity, and there is no unrighteousness in him.