Read 1 Samuel 10:12 Using Other Translations
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?
And a man of the place answered, "And who is their father?" Therefore it became a proverb, "Is Saul also among the prophets?"
And one of those standing there said, “Can anyone become a prophet, no matter who his father is?” So that is the origin of the saying “Is even Saul a prophet?”