Even in the third year of Asa king of Judah did Baasha slay him, and reigned in his stead.

Wesley's Notes

15:28 Even, and c. - It was threatened, chap.14:15, that Israel should be as a reed shaken in the water. And so they were, when, during the single reign of Asa, their government was in seven or eight different hands. Jeroboam was upon the throne at the beginning of his reign, and Ahab at the end of it: between whom were Nadab, Baashah, Elah, Zimri, Tibni, and Omri, undermining and destroying one another. This they got by deserting the house both of God and of David.

Matthew Henry's Concise Commentary

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.