Matthew Poole and continuators on 1 Corinthians 16:2

2 Upon the first day of the week , let every one of you lay by him in store, as God hath prospered him, that there be no gatherings when I come .

From hence both divers of the Ancients, and very many late Divines, argue for the change of the Sabbath from the seventh day of the week to the first. It is plain from hence, that the Gospel-Churches were wont to assemble upon that day, (nor do we read in Scripture of any Assembly of Christians for religious Worship on any other day.) On this day the Apostle orders Collections for the poor Saints to be made, accordingly as God had prospered any in their imployments; he directeth that they should every one lay by him something, not doing what he did with any oftentation, but having it ready when it should be called for: this he calls a Treasuring, (so it is in the Greek) treasuring; monies laid by for charitable uses are Treasures, both with respect to those for whom they are laid up, and also for our selves; for he that giveth to the poor, layeth up for himself Treasures in Heaven.

He would have no gatherings when he came, either to avoid the scandal of his being chargeable to them, or that he would have no delay; but when he came, it might be in a readiness to be presently sent away.

Marginal references: Acts 20.7. Rev. 1.10.