Notice the emphasis on the personal pronoun "My." The source of the law or the values we submit to is the sovereign. This aids us greatly in determining whether idolatry is present and how our conscience will respond.
God forcefully contrasts His laws with pagan commands and practices. He clearly implies that those who submit to pagan commands are guilty of putting another god before the true God. The Israelites—in sincerity and a clear conscience, perhaps even fervently—brutally sacrificed their sweet and innocent firstborn in the fires to Molech, and all the while they were guilty of a horrible, vicious idolatry!
Today, we may not throw babies onto Molech's altar, but we abort 4,200 pregnancies a day, ending the lives of these potential members of God's Family in the name of free choice and self-concern. The law of the land permits this atrocity! If that is not idolatry, what is? What kind of morality, what religion, permits men to enact such heinous laws? People have become blinded by focusing on their own pleasure, failing to see even that murder is involved, let alone the idolatry. God's law nowhere permits such a depraved activity.