John 7:10-15

But when His brothers had gone up to the feast, then He Himself also went up, not publicly, but as if, in secret. So the Jews were seeking Him at the feast and were saying, “Where is He?” There was much grumbling among the crowds concerning Him; some were saying, “He is a good man”; others were saying, “No, on the contrary, He leads the people astray.” Yet no one was speaking openly of Him for fear of the Jews. 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?”