1 Samuel 10:11-12

11It came about, when all who knew him previously saw that he prophesied now with the prophets, that the people said to one another, “What has happened to the son of Kish? 1Is Saul also among the prophets?”

12A man there said, “Now, who is their father?” Therefore it became a proverb: “2Is Saul also among the prophets?”