CCC 2132

The Christian veneration of images is not contrary to the first commandment which proscribes idols. Indeed, "the honor rendered to an image passes to its prototype," and "whoever venerates an image venerates the person portrayed in it." St. Basil, De Spiritu Sancto 18, 45: PG — Patrologia Graeca (Migne)C; Council of Nicaea II: DS — Denzinger–Schönmetzer (Enchiridion Symbolorum); cf. Council of Trent: DS — Denzinger–Schönmetzer (Enchiridion Symbolorum); Vatican Council II: SC 126; LG 67. The honor paid to sacred images is a "respectful veneration," not the adoration due to God alone:

Religious worship is not directed to images in themselves, considered as mere things, but under their distinctive aspect as images leading us on to God incarnate. the movement toward the image does not terminate in it as image, but tends toward that whose image it is. St. Thomas Aquinas, STh II-II, 81, 3 ad 3.

Read the full chapter 1. You Shall Love the Lord Your God with All Your Heart, and with All Your Soul, and with All Your Mind ¶2083–2195

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