(26) Did evil in the sight of the Lord.--This constantly-recurring phrase signifies (as, indeed, the context here shows) perseverance in the idolatrous system introduced by Jeroboam.

Pulpit Commentary

Verse 26. - And he did evil in the sight of the Lord, and walked in the way of his father [Jeroboam begat all his sons, save one, "in his own likeness"], and in his sin wherewith he made Israel to sin. [I.e., not the rebellion, but the schism (1 Kings 12:30; 1 Kings 14:16; cf. vers. 30, 34; 16:2, 13, 19, etc.; see Homiletics, p. 274). All the successors of Jeroboam it is clear, either thought themselves compelled, by the exigencies of their position, to adhere to his ecclesiastical policy, or found themselves more and more entangled in its toils.]

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.

Gill's Exposition of the Entire Bible

And he did evil in the sight of the Lord,.... Committed idolatry, than which nothing is a greater evil in his sight:

and walked in the way of his father, and in his sin wherewith he made Israel to sin: in making and worshipping of golden calves.

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