Thus saith: Amos, says Abp. Newcome, first prophesies against the Syrians, Philistines, Tyrians, Edomites, Ammonites, and Moabites, who dwelt in the neighbourhood of the twelve tribes, and had occasionally become their enemies and persecutors. Having thus taught his countrymen that the providence of God extended to other nations, he briefly mentions the idolatrous practices and consequent destruction of Judah, and then passes on to his proper subject, which was to exhort and reprove the kingdom of Israel, and to denounce against it the Divine judgments.
For three: Amos 6:3-7; 2 Kings 17:7-18, 2 Kings 18:12; Ezekiel 23:5-9; Hosea 4:1-2, Hosea 4:11-14, Hosea 7:7-10, Hosea 8:4-6; Hosea 13:2-3; Micah 6:10-16
because: Amos 5:11-12, Amos 8:4-6; Isaiah 5:22-23, Isaiah 29:21; Joel 3:3, Joel 3:6; Micah 3:2-3