Why is "You shall not make for yourself an idol" in the Ten Commandments?

The language of these laws is absolute and peremptory. “You shall” or “you shall not.” No allowance is made for any deviation. First, no other god could be allowed to take God's place. Nothing must in any way be used even to represent God, no image, no likeness of anything in creation must have any place of spiritual honor in people's minds. This is idolatry. Even pictures of this kind were forbidden (Num. 33:52)

In the second place they were to make no attempt to have an image or material representation of any unseen power. God is "in heaven above," and anything purporting to be an image of Him is forbidden. Many other powers there are both invisible and visible, and no representations of such are to be made. All the idols of the heathen are strictly forbidden, and in this connection the warning is issued as to the sins of the fathers descending in retribution on the children. God knew how terribly infectious such idolatrous practices are; and, that if the fathers start them the epidemic rages with tenfold virulence in the children, and brings down the judgment upon their heads.

Here lies the solid ground of the appeal against idolatry. They saw nothing. God did not show Himself to them. He did not assume any bodily shape of which they might form an image. He gave them His word, His holy commandments, so plain that a child could understand them, and the wayfaring men though fools need not err therein. There was no need for them therefore to set about imagining what God was like; nay, this was the very sin against which they were so faithfully warned. They were called to hear God's voice, not to see His shape — to obey His commandments, not to make an image of Him. Superstition vainly seeks to do honour to God by forming and worshipping an image. Faith, on the contrary, lovingly receives and reverently obeys His holy commandments. "If a man love me," says our blessed Lord, "he will" — what? make an image of me, and worship it? Nay, but "he will keep my words." This makes it so simple, so safe, so certain. We are not called to work up our minds to form any conception of God. We have simply to hear His word and keep His commandments. We can have no idea whatever of God, but as He has been pleased to reveal Himself. "No man has seen God at any time; the only-begotten Son, which is in the bosom of the Father, he has declared him." "God, who commanded the light to shine out of darkness, has shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ."

Jesus is declared to be the brightness of God's Glory and the exact impression of His substance. He could say, "He that has seen me has seen the Father." Thus the Son reveals the Father; and it is by the word, through the power of the Holy Ghost, that we know anything of the Son; and therefore for any one to attempt, by any efforts of his mind or workings of his imagination to conceive an image of God, or of Christ, is simply idolatry. To endeavour to arrive at any knowledge of God or of Christ, save by scripture, is simply mysticism and confusion; nay more, it is to put ourselves directly into the hands of the devil, to be led by him into the wildest, darkest, and deadliest delusion.

The image of jealousy presents, first, the general thought which underlies all that follows here. God will not give His glory to another. Hence any self-devised image of Him, which must of necessity be man's imagination, must be a challenge of the One only to be known by revelation, otherwise unsearchable. It is impossible indeed for man's thoughts to get beyond himself. Thus the image of God which he devises must be only in some way a reflection of himself; but this is the debasement of God to man's own likeness. The question is asked in Job as an unanswerable one: "Canst thou by searching find out God? Canst thou find out the Almighty to perfection?" Whatever the witness of creation therefore (true witness as it is), God never really left man to that. He declared Himself, as Scripture assures us, at the beginning; and it was man who voluntarily got away from this, banished himself into the darkness and distortion of his own thoughts.

And still this image of jealousy is that which threatens us all. It stands, as it were, at the very entrance when we would approach God Himself. And it need not be a visible or open image to do this. What admonition there is for us in this endeavor, as it really is, to have a god after our own thoughts, which is always in opposition to the true God? Thus "covetousness," the apostle tells us, "is idolatry;" and this, as we know, may be amongst those who are in all other respects most orthodox. But the heart after its own object, seeking that which gratifies itself (although it never satisfies), will have a god according to its own thought; while in name He may abide just what He was, and all the points of orthodoxy be preserved.

The second forbids idolatry, — the abasing Him to some creature-conception. (See Rom. 1:23.)

"Take ye therefore good heed to yourselves, (for ye saw no manner of similitude on the day that the Lord spake to you in Horeb out of the midst of the fire,) lest ye corrupt yourselves, and make you a graven image, the similitude of any figure, the likeness of male or female, the likeness of any beast that is on the earth, the likeness of any winged fowl that flies in the air, the likeness of anything that creeps on the ground, the likeness of any fish that is in the waters beneath the earth; and lest thou lift up thine eyes to heaven, and when thou seest the sun, and the moon, and the stars, even all the host of heaven, shouldest be driven to worship them, and serve them, which the Lord thy God has divided to all nations under the whole heaven. But the Lord has taken you, and brought you forth out of the iron furnace, even out of Egypt, to be to him a people of inheritance, as ye are this day."

There is a very weighty truth set before us here. The people are expressly taught that in making any image and bowing down thereto, they, in reality, lowered and corrupted themselves. Hence, when they made the golden calf, the Lord said to Moses, "Go, get thee down; for thy people which thou broughtest out of the land of Egypt, have corrupted themselves." It could not be otherwise. The worshipper must be inferior to the object of his worship; and therefore, in worshipping a calf, they actually put themselves below the level of the beasts that perish. Well, therefore, might He say, They "have corrupted themselves; they have turned aside quickly out of the way which I commanded them; they have made them a molten calf, and have worshipped it, and have sacrificed thereunto, and said, These be thy gods, O Israel, which have brought thee up out of the land of Egypt."

Likely they excused their idolatry, as many do today, by saying this was only an image made to represent God, but God forbad any such images (Ex. 20:4). Actually, though things like this are claimed to be only representations, it is very soon that the thing itself becomes the god that people worship.

It is remarkable that the commandments given with the object of asserting and safeguarding the glory and the rights of God should be three, and this long before the reality of the three Persons in the Godhead was brought to light. We cannot but see in the second the clearing away of all that would be calculated to confuse the issue when our blessed Lord Jesus appeared as "the image of the invisible God" (Col. 1:15). In Him, and in Him alone, is found the true and perfect representation of all that God is.

"Thou shalt not make unto thee any graven image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth. Thou shalt not bow down thyself to them nor serve them: for I the Lord thy God am a jealous God" (Ex. 20:4-5). God is jealous of giving His glory to another, but that only emphasizes the fact that the Son is one with the Father. All images that man might make can but provoke to jealousy but here is "the image of the invisible God." He is jealous for His Son, "that all men should honor the Son even as they honor the Father." "Worthy, O Lamb of God, art Thou That every knee to Thee should bow."

The second commandment is related to the first, forbidding the making of images of any created thing, whether in heaven or earth or in the waters (v.8). Bowing down to such things or worshiping them is an insult to God. Israel did this in the case of the golden calf (Ex.32:1-8), but God is rightly jealous of His own glory, and if the fathers are guilty of such iniquity, God will visit the results of this upon the children to the third and fourth generation (v.9). It is always true that our children will suffer because of our disobedience to God. This does not affect the question of eternal salvation, for any one of the children may still call on the Lord and be saved, but their lives on earth will be affected by their parents' wrongdoing. If a man is a robber, his children will suffer on earth because of this, but they can still be saved eternally by receiving Christ as Savior.