Exactly. THEIR feasts, the pagan feasts, new moons, and "sabbaths" NEVER pleased Him. He said so OVER and over and over again.
I find it interesting how you constantly insert justifications that can be found only in the dim recesses of your own imaginations, i.e. Pagans. If you knew your Bible as well as you profess, you would know that these references to "the fast" is the Yom Kippur or Day of Atonement, the "new moon and sabbath" is the Rosh Hoshanna or Feast of Trumpets because it was the only Feast Day dictated by the new moon, "thanksgiving" and entering His gates is about the Feast of Tabernacles. I don't understand why you attempt to deflect Isaiah's criticism of these Jewish Feast days and sacrifices by calling them pagan when they clearly were Jewish.
One of the reasons why I appreciate the website earlychristianwritings.com is because it gives an unbiased accounting of the perspectives of the Christian life and thought in the years following the Apostles. Please note that Aristides is not referring to Pagan Feasts as he has already dealt with that in the section on Barbarians and Greeks.
From the Apology of Aristides, a famous Christian apologist about 120 AD in an address to Emperor Hadrian comparing Barbarians, Greeks, Jews and Christians.
XIV. Let us come now, O King, to the history of the Jews also, and see what opinion they have as to God. The Jews then say that God is one, the Creator of all, and omnipotent; and that it is not right that any other should be worshipped except this God alone. And herein they appear to approach the truth more than all the nations, especially in that they worship God and not His works. And they imitate God by the philanthropy which prevails among them; for they have compassion on the poor, and they release the captives, and bury the dead, and do such things as these, which are acceptable before God and well-pleasing also to men,--which (customs) they have received from their forefathers.
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.
XV. But the Christians, O King, while they went about and made search, have found the truth; and as we learned from their writings, they have come nearer to truth and genuine knowledge than the rest of the nations. For they know and trust in God, the Creator of heaven and of earth, in whom and from whom are all things, to whom there is no other god as companion,
from whom they received commandments which they engraved upon their minds and observe in hope and expectation of the world which is to come. [PLEASE NOTE THE COMMANDMENTS THAT THE CHRISTIANS OF THE FIRST AND SECOND CENTURY FOLLOWED AND WHERE THEY ORIGINATED]Wherefore they do not commit adultery nor fornication, nor bear false witness, nor embezzle what is held in pledge, nor covet what is not theirs. They honour father and mother, and show kindness to those near to them; and whenever they are judges, they judge uprightly. They do not worship idols (made) in the image of man; and whatsoever they would not that others should do unto them, they do not to others; and of the food which is consecrated to idols they do not eat, for they are pure. And their oppressors they appease (lit: comfort) and make them their friends; they do good to their enemies; and their women, O King, are pure as virgins, and their daughters are modest; and their men keep themselves from every unlawful union and from all uncleanness, in the hope of a recompense to come in the other world. Further, if one or other of them have bondmen and bondwomen or children, through love towards them they persuade them to become Christians, and when they have done so, they call them brethren without distinction. They do not worship strange gods, and they go their way in all modesty and cheerfulness. Falsehood is not found among them; and they love one another, and from widows they do not turn away their esteem; and they deliver the orphan from him who treats him harshly. And he, who has, gives to him who has not, without boasting. And when they see a stranger, they take him in to their homes and rejoice over him as a very brother; for they do not call them brethren after the flesh, but brethren after the spirit and in God. And whenever one of their poor passes from the world, each one of them according to his ability gives heed to him and carefully sees to his burial. And if they hear that one of their number is imprisoned or afflicted on account of the name of their Messiah, all of them anxiously minister to his necessity, and if it is possible to redeem him they set him free. And if there is among them any that is poor and needy, and if they have no spare food, they fast two or three days in order to supply to the needy their lack of food.
They observe the precepts of their Messiah with much care, living justly and soberly as the Lord their God commanded them. Every morning and every hour they give thanks and praise to God for His loving-kindnesses toward them; and for their food and their drink they offer thanksgiving to Him. And if any righteous man among them passes from the world, they rejoice and offer thanks to God; and they escort his body as if he were setting out from one place to another near. And when a child has been born to one of them, they give thanks to God; and if moreover it happen to die in childhood, they give thanks to God the more, as for one who has passed through the world without sins. And further if they see that any one of them dies in his ungodliness or in his sins, for him they grieve bitterly, and sorrow as for one who goes to meet his doom.
XVI.
Such, O King, is the commandment of the law of the Christians, and such is their manner of life. As men who know God, they ask from Him petitions which are fitting for Him to grant and for them to receive. And thus they employ their whole lifetime. And since they know the loving-kindnesses of God toward them, behold! for their sake the glorious things which are in the world flow forth to view.
And verily, they are those who found the truth when they went about and made search for it; and from what we considered, we learned that they alone come near to a knowledge of the truth. And they do not proclaim in the ears of the multitude the kind deeds they do, but are careful that no one should notice them; and they conceal their giving just as he who finds a treasure and conceals it. And they strive to be righteous as those who expect to behold their Messiah, and to receive from Him with great glory the promises made concerning them. And as for their words and their precepts, O King, and their glorying in their worship, and the hope of earning according to the work of each one of them their recompense which they look for in another world,-you may learn about these from their writings. It is enough for us to have shortly informed your Majesty concerning the conduct and the truth of the Christians. For great indeed, and wonderful is their doctrine to him who will search into it and reflect upon it.
And verily, this is a new people, and there is something divine (lit: "a divine admixture") in the midst of them.
Take, then, their writings, and read therein, and lo! you will find that I have not put forth these things on my own authority, nor spoken thus as their advocate; but since I read in their writings I was fully assured of these things as also of things which are to come. And for this reason I was constrained to declare the truth to such as care for it and seek the world to come. And to me there is no doubt but that the earth abides through the supplication of the Christians. But the rest of the nations err and cause error in wallowing before the elements of the world,
since beyond these their mental vision will not pass. And they search about as if in darkness because they will not recognize the truth; and like drunken men they reel and jostle one another and fall.