Irenaeus:
“We will give account to God not only of deeds (as slaves), but even of words and thoughts (as being those who have truly received the power of liberty). For under liberty, a man is more severely tested as to whether he will reverence, fear, and love the Lord. . . . God desires obedience, which makes [His worshippers] secure – rather than sacrifices and burnt-offerings, which avail men nothing towards righteousness.”
Justin Martyr:
“I hold further, that those of you who have confessed and known this man to be Christ, yet who have gone back for some reason to the legal dispensation [i.e., the Mosaic Law], and have denied that this man is Christ, and have not repented before death – you will by no means be saved.”
Cyprian:
“How can a man say that he believes in Christ, if he does not do what Christ commanded him to do? From where will he attain the reward of faith, if he will not keep the faith of the commandment? . . . He will make no advancement in his walk toward salvation, for he does not keep the truth of the way of salvation.”