1 Samuel 15:23

This is the greatest fault under which humanity labors, that after sinning they take refuge in excuses rather than prostrate themselves with repentant confession. Clearly such wickedness is to be reckoned amongst the worst sins, for its true source also seems to occasion slower progress by the sinner towards repentance. As the first book of Kings [Samuel] has it: "It is like the sin of witchcraft to rebel, and like the crime of idolatry to refuse to obey."

Because you have rejected the word of the Lord, etc. Just as the other parts of this reading, so too this rejection of Saul, according to the allegory, can be applied to the synagogue, and according to the tropology of the law to any false Christian, whether teacher or disciple who was initially faithful but subsequently condemnable, fulfilled the prophecy of Balaam that says: "A ruler shall come out of Jacob, and destroy what remains of the city" (Num. XXIV); for because of the hidden and not entirely eradicated pest of pride in the heart, both the former Jewish people and now many Christians are deprived of the seat of the heavenly kingdom.

24. What is it that those who resist and refuse to comply are likened by the prophet to diviners and idolaters, except that diviners strove to know divine things and to divine hidden matters, while idolaters subjected themselves to figments by venerating them? But those who resist the commands of their superiors resist precisely because they judge that they know the divine will better. To resist is therefore like the sin of divination: because, as if despising the divine altar, they receive responses at the altars of demons, when they trust in the deceitful and proud inventions of their own heart, and oppose by contrary thinking the salutary counsels of their superiors. To refuse to comply, moreover, is said to be like the crime of idolatry; because surely no one would persist in the obstinacy of his disobedience if he did not carry in his heart the figment of his own purpose as though it were an idol. For when he conceives in his heart what he intends to do, he makes, as it were, an idol, and when he resolves that he will carry out the purpose conceived in his mind, he bows down, as it were, to adore a graven image. To refuse to comply is therefore like the crime of idolatry: because whoever is obstinate in his own resolve is raised up outwardly in contempt of his superiors precisely because inwardly he is bowed down to the graven images of his own purpose which he has established by his own devising. But it must be carefully asked why resisting is compared to the sin of divination, and refusing to comply to the crime of idolatry. For "crime" is used only of a great sin, while "sin" is the term used even for what is slight; but if diviners were so called from "altar," because they were accustomed to receive responses by consulting, the sin of idolatry was a crime in comparison with it, because it was more insane to worship stones than to receive false responses about how to live well under the guise of divine things. Why then is resisting said by comparison to be a sin, while refusing to comply is called a crime? But to resist is to dissent from the will of one who commands. Many indeed seem to resist for a time, when they do not immediately accept the commands of their superiors, yet after a little while they comply with those same commands. But to refuse to comply—what is it but both to resist an enjoined obedience and to persist in the obstinacy of that…