Then Saul sent messengers to take David. And when they saw the group of prophets prophesying, and Samuel standing as leader over them, the Spirit of God came upon the messengers of Saul, and they also prophesied.
1 Samuel 19:20
Surrounding context
19:19 Now it was told Saul, saying, "Take note, David is at Naioth in Ramah!"
19:20 Then Saul sent messengers to take David. And when they saw the group of prophets prophesying, and Samuel standing as leader over them, the Spirit of God came upon the messengers of Saul, and they also prophesied.
19:21 And when Saul was told, he sent other messengers, and they prophesied likewise. Then Saul sent messengers again the third time, and they prophesied also.