John 7:10-17 ESV
But after his brothers had gone up to the feast, then he also went up, not publicly but in private. The Jews were looking for him at the feast, and saying, “Where is he?” And there was much muttering about him among the people. While some said, “He is a good man,” others said, “No, he is leading the people astray.” Yet for fear of the Jews no one spoke openly of him.
About the middle of the feast Jesus went up into the temple and began teaching. The Jews therefore marveled, saying, “How is it that this man has learning, when he has never studied?” So Jesus answered them, “My teaching is not mine, but his who sent me. If anyone’s will is to do God’s will, he will know whether the teaching is from God or whether I am speaking on my own authority.
ESV: English Standard Version 2016