Their king; or Milchore, or Moloch, the idol of the Ammonites, so it signifieth, as well as king. I suppose the prophet may intend both, their god as well as their king shall be carried captive, as was customary with conquerors, 1 Samuel 5:2 Isaiah 46:2. He: this repeats and confirms the threat, whether it refer to the idol or the king. His princes; either nobles and ministers of state, who attend and serve the king, or the priests and ministers of the idol; here both may be included, and the utter overthrow of their affairs in religion and state be signified and foretold. Saith the Lord: this, as elsewhere, doth ratify and insure all; it shall so be, for God hath spoken it.
Related Commentaries of Amos 1:15
Amos 1:15
15 And their king shall go into captivity, he and his princes together, saith the LORD.