11 When all those who had formerly known him saw him prophesying with the prophets, they asked each other, “What is this that has happened to the son of Kish? Is Saul also among the prophets?”

Read 1 Samuel 10:11 Using Other Translations

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 when all who knew him previously saw how he prophesied with the prophets, the people said to one another, "What has come over the son of Kish? Is Saul also among the prophets?"
When those who knew Saul heard about it, they exclaimed, “What? Is even Saul a prophet? How did the son of Kish become a prophet?”