Matthew Henry on 1 Kings 16:15-28
Solomon observes (Pro 28:2) that for the transgression of a land many were the princes thereof (so it was here in Israel), but by a man of understanding the state thereof shall be prolonged - so it was with Judah at the same time under Asa. When men forsake God they are out of the way of rest and establishment. Zimri, and Tibni, and Omri, are here striving for the crown. Proud aspiring men ruin one another, and involve others in the ruin. These confusions end in the settlement of Omri; we must therefore take him along with us through this part of the story.
I. How he was chosen, as the Roman emperors often were, by the army in the field, now encamped before Gibbethon. Notice was soon brought…
Read the whole note in the consoleJamieson-Fausset-Brown on 1 Kings 16:19
For his sins which he sinned--This violent end was a just retribution for his crimes. "His walking in the ways of Jeroboam" might have been manifested either by the previous course of his life, or by his decrees published on his ascension, when he made a strong effort to gain popularity by announcing his continued support of the calf worship.
Adam Clarke on 1 Kings 16:15
The people were encamped against Gibbethon - It appears that, at this time, the Israelites had war with the Philistines, and were now besieging Gibbethon, one of their cities. This army, hearing that Zimri had rebelled and killed Elah, made Omri, their general, king, who immediately raised the siege of Gibbethon, and went to attack Zimri in the royal city of Tirzah; who, finding his affairs desperate, chose rather to consume himself in his palace than to fall into the hands of his enemies.
John Gill on 1 Kings 16:20
Now the rest of the acts of Zimri, and his treason that he wrought, are they not written in the book of the kings of Israel? What he did both before and after his usurpation, during the seven days he was king, and the manner of his conspiracy, and success in it.