In Divrei Hayamim II 25:7 we read how "a man of G-d" came to the king of Judah, Amaziah, to warn him not to take soldiers from Israel with him to the battle against Edomites :
And a man of G-d came to him, saying, "O king, let not the army of Israel come with you, for the Lord is not with Israel, even with all the sons of Ephraim.
Who was this man of G-d?