3 For I can testify that they gave not only what they could afford, but far more. And they did it of their own free will. 4 They begged us again and again for the privilege of sharing in the gift for the believers in Jerusalem. 5 They even did more than we had hoped, for their first action was to give themselves to the Lord and to us, just as God wanted them to do.
Matthew Henry's Commentary on 2 Corinthians 8:3-5
Commentary on 2 Corinthians 8:1-6
(Read 2 Corinthians 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!