Also iconoduly, from the Greek eikon eikonos, image and douleia, servitude, (from doulos, slave, serf). Veneration of sacred images. The Catholic Church, since its confrontation with the iconoclasm of the Orthodox and later with the reformers, has defended the dulia or veneration of the saints through their images, the hyperdulia or veneration of the mother of Christ, and the latria or adoration of God and Christ, his son.