Amos 3:14 - Matthew Poole's English Annotations on the Holy Bible

In the day; in the appointed time, and within compass of a little time too; God will in his set time make quick work with them. Visit the transgressions of Israel upon him; the many and great transgressions of the ten tribes, these God will, as he hath foretold by his prophets, severely punish, and in particular their idolatry. The altars, erected unto the calves, and on which they Offered sacrifices to those idols by Jeroboam's appointment at first, and by the continued commands of their idolatrous governors. It is possible there might be altars to other idols too: see 2 Chronicles 34:4 Hosea 8:11, Hosea 10:1. Beth-el; anciently called Luz, but afterwards Jacob, on his comfortable vision, did change its name into Beth-el; it was in the tribe of Benjamin, and one of the two places Jeroboam first set up his idolatry in. The horns of the altar; whether a more sacred part in their account I know not, but who fled to the altar, and laid hold on the horns of it, found them a sanctuary, 1 Kings 2:28; but these now should not be safety to themselves. Shall be cut off, the altars shall be pulled down, and fall to the ground; be cast out as common, and trodden under foot with contempt.