1-kings 11 :9

The Lord was angry with Solomon - Had not this man's delinquency been strongly marked by the Divine disapprobation, it would have had a fatal effect on the morals of mankind. Vice is vice, no matter who commits it. And God is as much displeased with sin in Solomon as he can be with it in the most profligate, uneducated wretch. And although God sees the same sin in precisely the same degree of moral turpitude as to the act itself, yet there may be circumstances which greatly aggravate the offense, and subject the offender to greater punishment. Solomon was wise; he knew better; his understanding showed him the vanity as well as the wickedness of idolatry. God had appeared unto him twice, and thus given him the most direct proof of his being and of his providence. The promises of God had been fulfilled to him in the most remarkable manner, and in such a way as to prove that they came by a Divine counsel, and not by any kind of casualty. All these were aggravations of Solomon's crimes, as to their demerit; for the same crime has, in every case, the same degree of moral turpitude in the sight of God; but circumstances may so aggravate, as to require the offender to be more grievously punished; so the punishment may be legally increased where the crime is the same. Solomon deserved more punishment for his worship of Ashtaroth than any of the Sidonians did, though they performed precisely the same acts. The Sidonians had never known the true God; Solomon had been fully acquainted with him.