1 Samuel 10:5-6

5After that you shall come to the hill of God where the Philistine garrison is. And it will happen, when you have come there to the city, that you will meet a group of prophets coming down from the high place with a stringed instrument, a tambourine, a flute, and a harp before them; and they will be prophesying.

6Then the Spirit of the Lord will come upon you, and you will prophesy with them and be turned into another man.