7. The modern church historians make very conflicting statements respecting the Sabbath during the first centuries. Some pass over it almost in silence, or indicate that it was, at most, observed only by Jewish Christians. Others, however, testify to its general observance by the Gentile Christians; yet some of these assert that the Sabbath was observed as a matter of expediency and not of moral obligation, because those who kept it did not believe the commandments were binding. (This is a great error, as will appear in due time.) What is said, however, by these modern historians is comparatively unimportant inasmuch as their sources of information were of necessity the very writings which are about to be quoted.
8. In the following pages will be found, in their own words, every statement[C] which the fathers of the first three centuries make by way of defining their views of the Sabbath and first-day. And even when they merely allude to either day in giving their views of other subjects, the nature of the allusion is stated, and, where practicable, the sentence or phrase containing it is quoted. The different writings are cited in the order in which they purport to have been written. A considerable number were not written by the persons to whom they were ascribed, but at a later date. As these have been largely quoted by first-day writers, they are here given in full. And even these writings possess a certain historical value. For though not written by the ones whose names they bear, they are known to have been in existence since the second or third century, and they give some idea of the views which then prevailed.
First of all let us hear the so-called "Apostolical Constitutions." These were not the work of the apostles, but they were in existence as early as the third century, and were then very generally believed to express the doctrine of the apostles. They do therefore furnish important historical testimony to the practice of the church at that time. Mosheim in his Historical Commentaries, Cent. 1, sect. 51, speaks thus of these "Constitutions":--
"The matter of this work is unquestionably ancient; since the manners and discipline of which it exhibits a view are those which prevailed amongst the Christians of the second and third centuries, especially those resident in Greece and the oriental regions."