John 7:19

Jesus therefore answered them, “My teaching is not mine, but his who sent me.

If anyone desires to do his will, he will know about the teaching, whether it is from God or if I am speaking from myself.

He who speaks from himself seeks his own glory, but he who seeks the glory of him who sent him is true, and no unrighteousness is in him.

The multitude answered, “You have a demon! Who seeks to kill you?”

Jesus answered them, “I did one work and you all marvel because of it.

Moses has given you circumcision (not that it is of Moses, but of the fathers), and on the Sabbath you circumcise a boy.