2 Corinthians 9:6

Here we have, I. Proper directions to be observed about the right and acceptable manner of bestowing charity; and it is of great concernment that we not only do what is required, but do it as is commanded. Now, as to the manner in which the apostle would have the Corinthians give, observe, 1. It should be bountifully; this was intimated, Co2 9:5, that a liberal contribution was expected, a matter of bounty, not what savoured of covetousness; and he offers to their consideration that men who expect a good return at harvest are not wont to pinch and spare in sowing their seed, for the return is usually proportionable to what they sow, Co2 9:6. 2. It should be deliberately Every man, according as he purposes in his heart, Co2 9:7. Works of charity, like other good works, should be done with thought and design; whereas some do good only by accident. They comply, it may be hastily, with the importunity of others, without any good design, and give more than they intended, and then repent of it afterwards. Or possibly, had they duly considered all things, they would have given more. Due deliberation, as to this matter of our own circumstances, and those of the persons we are about to relieve, will be very helpful to direct us how liberal we should be in our contributions for charitable uses. 3.

— Matthew Henry's Concise Commentary (public domain)

I say--ELLICOTT and others supply the ellipsis thus: "But remember this." bountifully--literally, "with," or "in blessings." The word itself implies a beneficent spirit in the giver (compare Co2 9:7, end), and the plural implies the abundance and liberality of the gifts. "The reaping shall correspond to the proportions and spirit of the sowing" [BENGEL]. Compare Eze 34:26, "Showers of blessing."

— Jamieson-Fausset-Brown Commentary (public domain)