I Samuel 10:5-6, 10-13

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

When they came there to the hill, there was a group of prophets to meet him; then the Spirit of God came upon him, and he prophesied among them. And it happened, when all who knew him formerly saw that he indeed prophesied among the prophets, that the people said to one another, “What is this that has come upon the son of Kish? Is Saul also among the prophets?” Then a man from there answered and said, “But who is their father?” Therefore it became a proverb: “Is Saul also among the prophets?” And when he had finished prophesying, he went to the high place.