And indeed, they had the best advantage to do it; for they had their Lord in the head of them to back them to it by his presence and preaching thereon.
But we will a little comment upon the text. 'Upon the first day of the week.' Thus you see the day is nominated, and so is kept alive among the churches. For in that the day is nominated on which this religious exercise was performed, it is to be supposed that the Holy Ghost would have it live, and be taken notice of by the churches that succeed.
It also may be nominated to shew, that both the church at Jerusalem, and those of the Gentiles did harmonize in their sabbath, jointly concluding to solemnize worship on a [the same] day. And then again to shew, that they all had left the old sabbath to the unbelievers, and jointly chose to sanctify the day of the rising of their Lord, to this work.
They 'came together to break bread,' to partake of the super of the Lord. And what day so fit as the Lord's day for this? This was to be the work of that day, to wit, to solemnize that ordinance among themselves, adjoining other solemn worship thereto, to fill up the day, as the following part of the verse shews. This day therefore was designed for this work, the whole day, for the text declares it. The first day of the week was set by them apart for this work.
'Upon THE first day'; not upon A first day, or upon one first day, or upon such a first day; for had he said so, we had had from thence not so strong an argument for our purpose: but when he saith, 'upon the first day of the week' they did it, he insinuates, that it was their custom. [It was] also upon one of these, [that] Paul being among them, preached unto them, ready to depart on the morrow. Upon the first day: what, or which first day of this, or that, of the third or fourth week of the month? No, but upon the first day, every first day; for so the text admits us to judge.
'Upon the first day of the week, WHEN the disciples came together,' supposes a custom when, or as they were wont to come together to perform such service among themselves to God: then Paul preached unto them, &c.
It is a text also that supposes an agreement among themselves as to this thing. They came together then to break bread; they had appointed to do it then, for that then was the day of their Lord's resurrection, and that in which he himself congregated after he revived, with the first gospel church, the church at Jerusalem.
Thus you see, that breaking of bread, was the work, the work that by general consent was agreed to be by the churches of the Gentiles performed upon the first day of the week. I say, by the churches; for I doubt not but that the practice here, was also the practice of the rest of the Gentile churches, even as it had been before the practice of the church at Jerusalem.
For this practice now did become universal, and so this text implies; for he speaks here universally of the practice of all disciples as such, though he limits Paul preaching to that church with whom he at present personally was. Upon the first day of the week, 'when the disciples came together to break bread,' Paul being at that time at Troas preached to them on that day.
Thus then you see how the Gentile churches did use to break bread, not on the old sabbath, but on the first day of the week. And, I say, they had it from the church at Jerusalem; where the apostles were first seated, and beheld the way of their Lord with their eyes.