Commentators like Calvin and Barnes emphasize the verse's final phrase: "which you made for yourselves." The core sin was not just worshipping a false god, but the act of creating their own religion. They chose their own "king" (Moloch) and their own forms of worship (portable shrines) instead of submitting to the God who made them and His commands. This highlights the danger of any worship based on human preference rather than God's revealed will.