'Prophesying' in the Bible

Now the king of Israel and King Jehoshaphat of Judah were sitting on their respective thrones, dressed in their robes, at the threshing floor at the entrance of the gate of Samaria. All the prophets were prophesying before them.

All the prophets were prophesying the same, saying, "Attack Ramoth Gilead! You will succeed; the Lord will hand it over to the king."