"For in the day that I visit the transgressions of Israel on him, I will also visit the altars of Bethel; And the horns of the altar will be cut off, And fall to the ground.
Interesting that he is saying that, "God is not gonna work, God is not gonna move, God is not gonna judge, except He reveals it to His prophets." So before the judgment came, the prophets were warning the people that God was going to judge.