"And I am skilled in all of them, and I know Ephraim, and Israel is not hidden from me: for now Ephraim has committed fornication, Israel is contaminated: they will not give their thoughts, to turn again to their God, for the spirit of fornication is in the midst of them, and they have not known the Lord." LXX: "For I am your master: I have known Ephraim, and Israel has not departed from me; for now Ephraim has fornicated, Israel is defiled. They have not given their thoughts to turn back to the Lord their God, for the spirit of fornication is in them and they have not known the Lord." O priests and kings, who deceived my people; and you, the people, who have been deceived, have sinned so gravely that you have not only killed victims, but also sent them down to the depths of hell: do not think that the magnitude of your crimes has caused you to be completely separated from me. I am your teacher, indeed a scholar, who desires to improve, not punish; and to save, not destroy. "I know Ephraim," he says, "that is, Jeroboam, from whom the people were persuaded; and all the kings who followed him in both rank and wickedness, and Israel was not hidden from me, that is, the people of ten tribes, because Israel was contaminated by a fornicating king. At first the king began to fornicate from the worship of God, desiring to worship golden calves, and the people wanting to follow him, they fulfilled equal impiety with equal zeal." (III Kings 12) Finally, they shall not return to the Lord because they found what they wanted, and the spirit of fornication, which according to the apostle, works in the sons of diffidence, possesses their captive hearts, and therefore under that ruler, they did not know, no, they forgot their Creator. (Ephesians 2). Therefore, the leaders of perverse teachings and the people of the Lord do not ignore: not because they are worthy of His knowledge, but because nothing of what they do in secret is hidden from Him, of whom some were deceived and others fell. And they will not give their thoughts to repentance, who always advance in destruction. For the spirit of fornication, by which they have committed fornication in the Church and have departed from true marriage, is in their midst: therefore they have not known the Lord.
First the king [Jeroboam I] chose to play the whore away from the worship of God, wishing to adore golden calves. And the people followed him willingly—with equal zeal they accomplished equal ungodliness. They do not return to the Lord, for they found what they were looking for, and the spirit of whoredom—which according to the apostle “works in the sons of distrust”6—holds their hearts captive. As long as it governs, they will not know the Lord. In fact, they forgot their Creator.… They—whoever advances in ruin—do not have thoughts of penitence. For the spirit of whoredom, by which they played the whore in the church and by which they went away from the true marriage, dwells in their midst. That is why they did not know the Lord.
[AD 420] Jerome on Hosea 5:3-4