​Medals, crosses, rosaries, statues, paintings, and other religious articles have long been used as a means of fostering and expressing our religious devotion to God and the saints. Icons, or painted images of Christ and the saints, are especially popular among Eastern Christians as an aid to Christian piety and devotion. 

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The use of any religious article is therefore intended as a means of reminding us of God and of stirring up in us a ready willingness and desire to serve God and our neighbor. With this understanding we reject any use of religious articles as if they were mere charms or had some magic power to bring us good luck or better health. Such is not the Christian attitude. -osb.org