EARLY CHURCH MET ON THE FIRST DAY OF THE WEEK
100 AD BARNABAS "We keep the eighth day [Sunday] with joyfulness, the day also on which Jesus rose again from the dead" (The Epistle of Barnabas, 100 AD 15:6-8).
150AD JUSTIN: "And on the day called Sunday, all who live in cities or in the country gather together to one place, and the memoirs of the apostles or the writings of the prophets are read, as long as time permits; then, when the reader has ceased, the president verbally instructs, and exhorts to the imitation of these good things. Then we all rise together and pray, and, as we before said, when our prayer is ended, bread and wine and water are brought, and the president in like manner offers prayers and thanksgivings, according to his ability, and the people assent, saying Amen; and there is a distribution to each, and a participation of that over which thanks have been given, and to those who are absent a portion is sent by the deacons. And they who are well to do, and willing, give what each thinks fit; and what is collected is deposited with the president, who succours the orphans and widows and those who, through sickness or any other cause, are in want, and those who are in bonds and the strangers sojourning among us, and in a word takes care of all who are in need.
But Sunday is the day on which we all hold our common assembly, because it is the first day on which God, having wrought a change in the darkness and matter, made the world; and Jesus Christ our Saviour on the same day rose from the dead. For He was crucified on the day before that of Saturn (Saturday); and on the day after that of Saturn, which is the day of the Sun, having appeared to His apostles and disciples, He taught them these things, which we have submitted to you also for your consideration."
We are always together with one another. And for all the things with which we are supplied we bless the Maker of all through his Son Jesus Christ and through his Holy Spirit. And on the day called Sunday there is a gathering together in the same place of all who live in a city or a rural district. We all make our assembly in common on the day of the Sun, since it is the first day, on which God changed the darkness and matter and made the world, and Jesus Christ our Savior arose from the dead on the same day. For they crucified him on the day before Saturn's day, and on the day after (which is the day of the Sun the appeared to his apostles and taught his disciples these things. (Ante-Nicene Fathers , Vol. 1
200AD TERTULLIAN: Let him who contends that the Sabbath is still to be observed a balm of salvation, and circumcision on the eighth day because of threat of death, teach us that in earliest times righteous men kept Sabbath or practiced circumcision, and so were made friends of God. .. ...Therefore, since God originated Adam uncircumcised, and inobservant of the Sabbath, consequently his offspring also, Abel, offering Him sacrifices, uncircumcised and inobservant of the Sabbath, was by Him commended... Noah also, uncircumcised - yes, and inobservant of the Sabbath - God freed from the deluge. For Enoch, too, most righteous man, uncircumcised and inobservant of the Sabbath, He translated from this world... Melchizedek also, "the priest of most high God," uncircumcised and inobservant of the Sabbath, was chosen to the priesthood of God. (An Answer to the Jews 2:10; 4:1, Ante-Nicene Fathers Vol. 3, page 153)
225 AD The Didascalia "The apostles further appointed: On the first day of the week let there be service, and the reading of the Holy Scriptures, and the oblation, because on the first day of the week our Lord rose from the place of the dead, and on the first day of the week he arose upon the world, and on the first day of the week he ascended up to heaven, and on the first day of the week he will appear at last with the angels of heaven" (Didascalia 2).
250 AD IGNATIUS: "If, therefore, those who were brought up in the ancient order of things have come to the possession of a new hope, no longer observing the Sabbath, but living in the observance of the Lord's Day, on which also our life has sprung up again by Him and by His death-whom some deny, by which mystery we have obtained faith, and therefore endure, that we may be found the disciples of Jesus Christ, our only Master-how shall we be able to live apart from Him, whose disciples the prophets themselves in the Spirit did wait for Him as their Teacher? And therefore He whom they rightly waited for, being come, raised them from the dead. If, then, those who were conversant with the ancient Scriptures came to newness of hope, expecting the coming of Christ, as the Lord teaches us when He says, "If ye had believed Moses, ye would have believed Me, for he wrote of Me; " and again, "Your father Abraham rejoiced to see My day, and he saw it, and was glad; for before Abraham was, I am; " how shall we be able to live without Him? The prophets were His servants, and foresaw Him by the Spirit, and waited for Him as their Teacher, and expected Him as their Lord and Saviour, saying, "He will come and save us." Let us therefore no longer keep the Sabbath after the Jewish manner, and rejoice in days of idleness; for "he that does not work, let him not eat." For say the [holy] oracles, "In the sweat of thy face shalt thou eat thy bread." But let every one of you keep the Sabbath after a spiritual manner, rejoicing in meditation on the law, not in relaxation of the body, admiring the workmanship of God, and not eating things prepared the day before, nor using lukewarm drinks, and walking within a prescribed space, nor finding delight in dancing and plaudits which have no sense in them. And after the observance of the Sabbath, let every friend of Christ keep the Lord's Day as a festival, the resurrection-day, the queen and chief of all the days [of the week]. Looking forward to this, the prophet declared, "To the end, for the eighth day," on which our life both sprang up again, and the victory over death was obtained in Christ, whom the children of perdition, the enemies of the Saviour, deny, "whose god is their belly, who mind earthly things," who are "lovers of pleasure, and not lovers of God, having a form of godliness, but denying the power thereof." These make merchandise of Christ, corrupting His word, and giving up Jesus to sale: they are corrupters of women, and covetous of other men's possessions, swallowing up wealth insatiably; from whom may ye be delivered by the mercy of God through our Lord Jesus Christ! (Epistle of Ignatius to the Magnesians, Chapter IX)
300AD EUSEBIUS: "They did not, therefore, regard circumcision, nor observe the Sabbath neither do we; ... because such things as these do not belong to Christians" (Ecc. Hist., Book 1, Ch. 4)
[The Ebionites] were accustomed to observe the Sabbath and other Jewish customs but on the Lord's days to celebrate the same practices as we in remembrance of the resurrection of the Savior. (Church History Ill.xxvii.5)
"They [the pre- Mosaic saints of the Old Testament] did not care about circumcision of the body, neither do we [Christians]. They did not care about observing Sabbaths, nor do we. They did not avoid certain kinds of food, neither did they regard the other distinctions which Moses first delivered to their posterity to be observed as symbols; nor do Christians of the present day do such things" (Church History 1:4:8).
"The day of his [Christ's] light . . . was the day of his resurrection from the dead, which they say, as being the one and only truly holy day and the Lord's day, is better than any number of days as we ordinarily understand them, and better than the days set apart by the Mosaic Law for feasts, new moons, and Sabbaths, which the Apostle [Paul] teaches are the shadow of days and not days in reality" (Proof of the Gospel 4:16:186).
387 AD John Chrysostom "You have put on Christ, you have become a member of the Lord and been enrolled in the heavenly city, and you still grovel in the Law [of Moses]? How is it possible for you to obtain the kingdom? Listen to Paul's words, that the observance of the Law overthrows the gospel, and learn, if you will, how this comes to pass, and tremble, and shun this pitfall. Why do you keep the Sabbath and fast with the Jews?" (Homilies on Galatians 2:17).
Hence, the first day was already in the apostolic age honorably designated as "the Lord's Day." ...it appears, therefore, from the New Testament itself, that Sunday was observed as a day of worship, and in special commemoration of the Resurrection, whereby the work of redemption was finished. The universal and uncontradicted Sunday observance in the second century can only be explained by the fact that it has its roots in apostolic practice. (Philip Schaff, , vol. 1, pg. 478-479)
The New Testament contains clear evidence that from a very early period the first day of the week was observed by Christians as a day of assembly for "the breaking of bread" and perhaps for the collection of freewill offerings. (Acts xx:7 and 1 Corinth xvi:2). Justin Martyr in the middle of the second century describes how "on the day called Sunday" all town and country Christians assembled for instructions in holy writings, for prayer distribution of bread and wine, and the collection of alms. Tertullian declared that the Christians "made Sunday a day of joy, but for other reasons that to adore the sun which was not part of their religion. (COLLIER'S ENCYCLOPEDIA Sunday, 1985, pg. 632-633)