1 Samuel 10:11-12

And it came to pass, when all that knew him beforetime saw that, behold, he prophesied among the prophets, then the people said one to another, What is this that is come unto the son of Kish? Is Saul also among the prophets? And one of the same place answered and said, But who is their father? Therefore it became a proverb, Is Saul also among the prophets?