St. Philaret of Moscow 1821-1867
516. What is a graven image, as spoken of in the second commandment?
The commandment itself explains that a graven image, or idol, is the likeness of some creature in heaven, or earth, or in the waters, which men bow down to and serve instead of God their Maker.
517. What is forbidden, then, by the second commandment?
We are forbidden to bow down to graven images or idols, as to supposed deities, or as to likenesses of false gods.
518. Are we not hereby forbidden to have any sacred representations whatever?
By no means. This very plainly appears from hence, that the same Moses through whom God gave the commandment against graven images, received at the same time from God an order to place in the tabernacle, or movable temple of the Israelites, sacred representations of Cherubim in gold, and to place them, too, in that inner part of the temple to which the people turned for the worship of God.
519. Why is this example worthy of remark for the Orthodox Christian Church?
Because it illustrates her use of holy icons.
520. What is an icon?
The word is Greek, and means, an image or representation. In the Orthodox Church this name designates sacred representations of our Lord Jesus Christ, God incarnate, his immaculate Mother, and his saints.
521. Is the use of holy icons agreeable to the second commandment?
It would then, and then only, be otherwise, if any one were to make gods of them; but it is not in the least contrary to this commandment to honor icons as sacred representations, and to use them for the religious remembrance of God’s works and of his saints; for when thus used icons are books, written with the forms of persons and things instead of letters. (See Greg. Magn. lib. ix. Ep. 9, ad Seren. Episc.)
522. What disposition of mind should we have when we reverence the icons?
While we look on them with our eyes, we should mentally look to God and to the saints, who are represented on them. (Larger Catechism)