For to their power, I bear record, yea, and beyond their power they were {c} willing of themselves;

(c) Of their own accord they were generous.

People's New Testament

8:3 For to their power... and beyond their power. It was not the greatness of their contribution, but the fact that they gave not only up to, but even beyond their ability, which made their liberality so rich. The widow who gave her mite did more than the rich men who cast in out of their abundance. Compare Mr 12:41-44 Lu 21:1-4.

They were willing of themselves. Required no urging.

Jamieson-Fausset-Brown Bible Commentary

3-5. they were willing-rather, supply from 2Co 8:5, the ellipsis thus, "According to their power . yea, and beyond their power, THEY GAVE."

of themselves-not only not being besought, but themselves beseeching us.

Matthew Henry's Concise Commentary

8:1-6 The grace of God must be owned as the root and fountain of all the good in us, or done by us, at any time. It is great grace and favour from God, if we are made useful to others, and forward to any good work. He commends the charity of the Macedonians. So far from needing that Paul should urge them, they prayed him to receive the gift. Whatever we use or lay out for God, it is only giving him what is his own. All we give for charitable uses, will not be accepted of God, nor turn to our advantage, unless we first give ourselves to the Lord. By ascribing all really good works to the grace of God, we not only give the glory to him whose due it is, but also show men where their strength is. Abundant spiritual joy enlarges men's hearts in the work and labour of love. How different this from the conduct of those who will not join in any good work, unless urged into it!