Apology of Aristides (Early 2nd Century) Chapter 12:
Nevertheless they too erred from true knowledge. And in their imagination they conceive that it is God they serve; whereas by their mode of observance it is to the angels and not to God that their service is rendered:--as when they celebrate sabbaths and the beginning of the months, and feasts of unleavened bread, and a great fast; and fasting and circumcision and the purification of meats, which things, however, they do not observe perfectly.
Justin Martyr’s Dialog with Trypho (Mid-2nd Century) Chapter 18:
For we too would observe the fleshly circumcision, and the Sabbaths, and in short all the feasts, if we did not know for what reason they were enjoined you,--namely, on account of your transgressions and the hardness of your hearts.
Justin Martyr’s Dialog with Trypho (Mid-2nd Century) Chapter 20:
"Moreover, you were commanded to abstain from certain kinds of food, in order that you might keep God before your eyes while you ate and drank, seeing that you were prone and very ready to depart from His knowledge,
Justin Martyr’s Dialog with Trypho (Mid-2nd Century) Chapter 21:
Moreover, that God enjoined you to keep the Sabbath, and impose on you other precepts for a sign, as I have already said, on account of your unrighteousness, and that of your fathers
Justin Martyr’s Dialog with Trypho (Mid-2nd Century) Chapter 31:
The command of circumcision, again, bidding [them] always circumcise the children on the eighth day, was a type of the true circumcision, by which we are circumcised from deceit and iniquity through Him who rose from the dead on the first day after the Sabbath, [namely through] our Lord Jesus Christ. For the first day after the Sabbath, remaining the first of all the days, is called, however, the eighth, according to the number of all the days of the cycle, and [yet] remains the first.
Justin Martyr’s Dialog with Trypho (Mid-2nd Century) Chapter 33:
"As, then, circumcision began with Abraham, and the Sabbath and sacrifices and offerings and feasts with Moses, and it has been proved they were enjoined on account of the hardness of your people's heart, so it was necessary, in accordance with the Father's will, that they should have an end in Him who was born of a virgin, of the family of Abraham and tribe of Judah, and of David; in Christ the Son of God, who was proclaimed as about to come to all the world, to be the everlasting law and the everlasting covenant, even as the forementioned prophecies show.
Justin Martyr’s Dialog with Trypho (Mid-2nd Century) Chapter 45:
those who regulated their lives by the law of Moses would in like manner be saved. For what in the law of Moses is naturally good, and pious, and righteous, and has been prescribed to be done by those who obey it; and what was appointed to be performed by reason of the hardness of the people's hearts; was similarly recorded, and done also by those who were under the law. Since those who did that which is universally, naturally, and eternally good are pleasing to God, they shall be saved through this Christ in the resurrection equally with those righteous men who were before them
Justin Martyr’s Dialog with Trypho (Mid-2nd Century) Chapter 47:
But if some, through weak-mindedness, wish to observe such institutions as were given by Moses, from which they expect some virtue, but which we believe were appointed by reason of the hardness of the people's hearts, along with their hope in this Christ, and [wish to perform] the eternal and natural acts of righteousness and piety, yet choose to live with the Christians and the faithful, as I said before, not inducing them either to be circumcised like themselves, or to keep the Sabbath, or to observe any other such ceremonies, then I hold that we ought to join ourselves to such, and associate with them in all things as kinsmen and brethren. But if, Trypho," I continued, "some of your race, who say they believe in this Christ, compel those Gentiles who believe in this Christ to live in all respects according to the law given by Moses, or choose not to associate so intimately with them, I in like manner do not approve of them. But I believe that even those, who have been persuaded by them to observe the legal dispensation along with their confession of God in Christ, shall probably be saved. And I hold, further, that such as have confessed and known this man to be Christ, yet who have gone back from some cause to the legal dispensation, and have denied that this man is Christ, and have repented not before death, shall by no means be saved. Further, I hold that those of the seed of Abraham who live according to the law, and do not believe in this Christ before death, shall likewise not be saved, and especially those who have anathematized and do anathematize this very Christ in the synagogues, and everything by which they might obtain salvation and escape the vengeance of fire. For the goodness and the loving-kindness of God, and His boundless riches, hold righteous and sinless the man who, as Ezekiel tells, repents of sins; and reckons sinful, unrighteous, and impious the man who fails away from piety and righteousness to unrighteousness and ungodliness.
Justin Martyr’s Dialog with Trypho (Mid-2nd Century) Chapter 82:
For the prophetical gifts remain with us, even to the present time. And hence you ought to understand that [the gifts] formerly among your nation [the Jews] have been transferred to us.
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