Final answer:
Hosea 4:12 accuses the people of spiritual adultery against God by engaging in idolatry and forsaking their covenant.
Step-by-step explanation:
According to Hosea 4:12, the verse indicates that 'My people' have played the harlot against their God by turning to idols and thus engaging in spiritual adultery. The verse suggests that the people have allowed themselves to be led astray by divination and have gone whoring after their own inventions, abandoning their covenant relationship with God.