Deuteronomy 4:15

By which caution he insinuates man's great proneness to the worship of images. God, who in other places and times did appear in a similitude, in the fashion of a man, now in this most solemn appearance, when he comes to give eternal laws for the regulation and direction of the Israelites in the worship of God, and in their duty to men, he purposely avoids all such representations, to show that he abhors all worship of images, or of himself by images of what kind soever, as it here follows, Deuteronomy 4:16, because he is the invisible God, and cannot be represented by any visible image. See Isaiah 40:18 Acts 17:29.