He prepared not his heart ... - Rehoboam’s sin was a lack of earnestness and consistency.

And he did evil. —Syriac adds "before the Lord." The nature of his evil-doing is explained immediately: "for he did not direct…

So king Rehoboam strengthened himself in Jerusalem, and reigned: for Rehoboam was one and forty years old when he began to reign, and he reigne…

And he did evil
Committed idolatry, relapsed into that, his humiliation not being hearty and sincere: