What does 1 Samuel 19:20 mean?

Saul sent men to capture David, but when they saw a group of prophets prophesying with Samuel leading them, the Spirit of God came over Saul's men, and they started prophesying too. 1 Samuel 19:20 - Modern Text Bible

(Saul's men are overcome by God's Spirit and start prophesying, unable to carry out their mission.)