25 And Nadab the son of Jeroboam began to reign over Israel in the second year of Asa king of Judah; and he reigned over Israel two years. 26 And he did evil in the sight of Jehovah, and walked in the way of his father, and in his sin with which he made Israel sin. 27 And Baasha the son of Ahijah, of the house of Issachar, conspired against him; and Baasha smote him at Gibbethon, which [belonged] to the Philistines, when Nadab and all Israel were besieging Gibbethon. 28 And Baasha slew him in the third year of Asa king of Judah, and reigned in his stead. 29 And it came to pass when he was king, he smote all the house of Jeroboam; he left to Jeroboam none that breathed; until he had destroyed him, according to the word of Jehovah which he spoke by his servant Ahijah the Shilonite, 30 because of the sins of Jeroboam which he sinned, and wherewith he made Israel to sin; by his provocation with which he provoked Jehovah the God of Israel to anger. 31 And the rest of the acts of Nadab, and all that he did, are they not written in the book of the chronicles of the kings of Israel?
Matthew Henry's Commentary on 1 Kings 15:25-31
Commentary on 1 Kings 15:25-34
(Read 1 Kings 15:25-34)
During the single reign of Asa in Judah, the government of Israel was in six or seven different hands. Observe the ruin of the family of Jeroboam; no word of God shall fall to the ground. Divine threatenings are not designed merely to terrify. Ungodly men execute the just judgments of God upon each other. But in the midst of dreadful sins and this apparent confusion, the Lord carries on his own plan: when it is fully completed, the glorious justice, wisdom, truth, and mercy therein displayed, shall be admired and adored through all the ages of eternity.