Balaam was called a soothsayer here:
Joshua 13:22 Balaam also the son of Beor, the soothsayer, did the children of Israel slay with the sword among them that were slain by them.
He did not start that way, though.
Num 22:99 And God came unto Balaam, and said, What men are these with thee?
10 And Balaam said unto God, Balak the son of Zippor, king of Moab, hath sent unto me, saying,
He seems to have known God.