And I have seen folly in the prophets of Samaria; they prophesied in Baal, and caused my people Israel to err.
I have seen folly - literally, insipidity unsavouriness (Job 6:6) not having the salt of godliness (Colossians 4:6).
They prophesied in Baal - in name of Baal; in connection with his worship (see Jeremiah 2:8).
Caused my people to err - (Isaiah 9:16).