Clement of Alexandria : "For I would not that ye should have fellowship with demons," says the apostle; since the food of those who are saved and those who perish is separate. We must therefore abstain from these viands not for fear (because there is no power in them); but on account of our conscience, which is holy, and out of detestation of the demons to which they are dedicated, are we to loathe them; and further, on account of the instability of those who regard many things in a way that makes them prone to fall, "whose conscience, being weak, is defiled: for meat commendeth us not to God." "For it is not that which entereth in that defileth a man, but that which goeth out of his mouth." — The Instructor Book 2 John Chrysostom : "But not in all is knowledge," saith he. What knowledge doth he mean? about God, or about things offered in sacrifice to idols? For either he here glances at the Greeks who say that there are many gods and lords, and who know not Him that is truly God; or at the converts from among Greeks who were still rather infirm, such as did not yet know clearly that they ought not to fear idols and that "an idol is nothing in the world." But in saying this, he gently soothes and encourages the latter. For there was no need of mentioning all he had to reprove, particularly as he intended to visit them again with more severity. "But some being used to the idol eat as of a thing sacrificed to an idol, and their conscience being weak is defiled." They still tremble at idols, he saith. For tell me not of the present establishment, and that you have received the true religion from your ancestors. But carry back your thoughts to those times, and consider when the Gospel was just set on foot, and impiety was still at its height, and altars burning, and sacrifices and libations offering up, and the greater part of men were Gentiles; think, I say, of those who from their ancestors had received impiety, and who were the descendants of fathers and grandfathers and great-grandfathers like themselves, and who had suffered great miseries from the demons. How must they have felt after their sudden change! How would they face and tremble at the assaults of the demons! For their sake also he employs some reserve, saying, "But some with conscience of the things sacrificed to an idol." Thus he neither exposed them openly, not to strike them hard; nor doth he pass by them altogether: but makes mention of them in a vague manner, saying, "Now some with conscience of the idol even until now eat as of a thing sacrificed to an idol; that is, with the same thoughts as they did in former times: 'and their conscience being weak is defiled;'" not yet being able to despise and once for all laugh them to scorn, but still in some doubt. Just as if a man were to think that by touching a dead body he should pollute himself according to the Jewish custom, and then seeing others touching it with a clear conscience, but not with the same mind touching it himself, would be polluted. This was their state of feeling at that time. "For some," saith he, "with conscience of the idol do it even until now." Not without cause did he add, "even until now;" but to signify that they gained no ground by their refusing to condescend. For this was not the way to bring them in, but in some other way persuading them by word and by teaching. "And their conscience being weak is defiled." No where as yet doth he state his argument about the nature of the thing, but turns himself this way and that as concerning the conscience of the person partaking. For he was afraid lest in his wish to correct the weak person, he should inflict a heavy blow upon the strong one, and make him also weak. On which account he spares the one no less than the other. Nor doth he allow the thing itself to be thought of any consequence, but makes his argument very full to prevent any suspicion of the kind. — Homily on 1 Corinthians 20 Tertullian : But, so sinning, by shocking the weak consciences of the brethren thoroughly, they will sin against Christ." By this time, indeed, (he mentions individuals) by name: "Or have we not a power of eating. — On Modesty