But if any one contends that those days of the tree of life mentioned by the prophet Isaiah are the present times of the Church of Christ, and that Christ Himself is prophetically called the Tree of Life, because He is Wisdom, and of wisdom Solomon says, "It is a tree of life to all who embrace it;" and if they maintain that our first parents did not pass years in paradise, but were driven from it so soon that none of their children were begotten there, and that therefore that time cannot be alluded to in words which run, "as in the primitive days, and as in former years," I forbear entering on this question, lest by discussing everything I become prolix, and leave the whole subject in uncertainty. For I see another meaning, which should keep us from believing that a restoration of the primitive days and former years of the legal sacrifices could have been promised to us by the prophet as a great boon. For the animals selected as victims under the old law were required to be immaculate, and free from all blemish whatever, and symbolized holy men free from all sin, the only instance of which character was found in Christ. As, therefore, after the judgment those who are worthy of such purification shall be purified even by fire, and shall be rendered thoroughly sinless, and shall offer themselves to God in righteousness, and be indeed victims immaculate and free from all blemish whatever, they shall then certainly be "as in the primitive days, and as in former years," when the purest victims were offered, the shadow of this future reality. For there shall then be in the body and soul of the saints the purity which was symbolized in the bodies of these victims.