After this thing Jeroboam returned not from his evil way, but made again of the lowest of the people priests of the high places: whosoever would, he consecrated him, and he became one of the priests of the high places. (1 Kings 13:33)
A warning had been given, and a warning had been rejected. The king persisted in his evil way in spite of the prophecy of doom. Henceforth he could blame none other than himself for the results that were to accrue from his evil ways.