At first, on account of the idolatry which surrounded them, the early Christians did not deem it prudent to introduce images into their churches. Idolatry was so prevalent, that the first lesson they had to insist upon to the heathen, was the omnipresence of God; but when heathenism was conquered, the danger of idolatry ceased, and the peril was in the other direction; men began to insist on the infinity of the essence of the Godhead, and to deny the possibility of His becoming local by incarnation. They were ready to admit that Christ was inspired with a divine afflatus, but not that He was very and eternal God. Then, at once, it became necessary for the Church to use her every effort to impress on men's minds and hearts the truth that God had become very man, of the substance of His mother. Then pictures and images were introduced into churches. We must remember that the Church, to defend the truth, had to assume successively opposite positions, for the truth was double,--if we are to understand how she first opposed images, and then defended them. She did not contradict herself, her attitude was forced upon her, to maintain a two-fold truth. The use of images was commonly received in the east, when the Emperor Leo the Isaurian, resolved to abolish the practice. The contest began about the year 725. He was opposed by Pope Gregory II., Germanus, patriarch of Constantinople, and S. John Damascene. The first wrote vehemently to him on this subject. He maintained that the Word by having rendered Himself visible in taking a human body, subjected Himself to all conditions of a man, and that as it was lawful to represent any man, emperor or prince, so it was lawful to make representations of Christ. But, said he, Christians do not worship the cloth on which the picture is painted, nor the stone out of which the statue is hewn, but they use these visible representations as means of renewing the memory of the saints, and of raising up the mind to God. He denied that images received divine honours, but if "Lord Jesus, save us," be said before an image of Christ, "Holy Mother of God, intercede with Thy Son for us," before one of the Virgin, and "Intercede for us," before one of a Martyr; these prayers are not addressed to the image, but to Christ, or the Holy Virgin, or the Saint whom the figure is designed to portray.