John Gill Commentary 2 Chronicles 18:7

"And the king of Israel said unto Jehoshaphat, There is yet one man by whom we may inquire of Jehovah: but I hate him; for he never prophesieth good concerning me, but always evil: the same is Micaiah the son of Imla. And Jehoshaphat said, Let not the king say so." — 2 Chronicles 18:7 (ASV)

(See Gill on 2 Chronicles 18:2).