1 Kings 13:34 - Joseph Benson’s Commentary on the Old and New Testaments

This thing became sin to the house of Jeroboam An occasion of sin, and a mean of hardening all his posterity in their idolatry; or, rather, it became a punishment, as the word sin often signifies. This his obstinate continuance in his idolatry, after such warnings, brought dreadful punishments upon his family, and these not of an ordinary kind; but such as effected its utter extirpation. We may reflect here with Ostervald, on the astonishing blindness and ingratitude of Jeroboam. “Instead of relying on the promises which God had made him, to preserve the kingdom in his family, if he continued faithful, fearing lest his subjects should forsake him, if they went to worship at Jerusalem; out of a false policy he set up an idolatrous worship in his kingdom, which occasioned the ruin of his family, and at last the ruin of the kingdom of the ten tribes. Thus men, instead of trusting to God, in the faithful discharge of their duty, for security, have recourse to ill methods, whereby they draw upon themselves, at length, those very misfortunes they mean to avoid.” Indeed, all those betray themselves effectually, who endeavour to support themselves or families by any sin.