We must take then a part for the whole, and conclude, that from the time that the Lord Jesus rose from the dead, to the time that he shewed his hands and his side to Thomas, eight days were almost expired; that is, he had sanctified unto them two first days, and had accepted that service they had performed to him therein, as he testified by giving of them so blessed a farewell at the conclusion of both those days.
Hence now we conclude, that this was the custom of the church at this day, to wit, upon the first day of the week to meet together, and to wait upon their Lord therein. For the Holy Ghost counts it needless to make a continued repetition of things; it is enough therefore if we have now and then mention made thereof.
Obj. But Christ shewed himself alive to them at other times also, as in John 21 &c.
Ans. The names of all those days in which he so did are obliterated and blotted out, that they might not be idolized; for Christ did not set them apart for worship, but this day, the first day of the week, by its name is kept alive in the church, the Holy Ghost surely signifying thus much, that how hidden soever other days were, Christ would have his day, the first day had in everlasting remembrance among saints.
Churches also meet together now on the week days, and have the presence of Christ with them too in their employments; but that takes not off from them the sanction of the first day of the week, no more than it would take away the sanction of the old seventh day, had it still continued holy to them: wherefore this is no let or objection to hinder our sanctifying of the first day of the week to our God. But,
Third, Add to this, that upon Pentecost, which was the first day of the week, mention is made of their being together again: for Pentecost was always the morrow after the sabbath, the old seventh day sabbath. Upon this day, I say, the Holy Ghost saith, they were again 'with one accord together in one place.'
But oh! the glory that then attended them, by the presence of the Holy Ghost among them: never was such a thing done as was done on that first day until then. We will read the text, 'And when the day of Pentecost was fully come, they were all with one accord in one place. And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting. And there appeared unto them cloven tongues like as of fire, and it sat upon each of them. And they were all filled with the Holy Ghost' (Acts 2:1-4).
Here is a first day glorified! Here's a countenance given to the day of their Christian assembling. But we will note a few things upon it.
1. The church was now, as on other first days, all with one accord in one place. We read not that they came together by virtue of any precedent revelation, nor by accident, but contrariwise by agreement, they were together 'with one accord,' or by appointment, in pursuance of their duty, setting apart that day, as they had done the first days afore, to the holy service of their blessed Lord and Saviour Jesus Christ.
2. We read that this meeting of theirs was not begun on the old sabbaths, but when Pentecost was fully come: the Holy Ghost intimating, that they had left now, and began to leave, the seventh day sabbath to the unbelieving Jews.