John Calvin Commentary 2 Corinthians 9:11

"ye being enriched in everything unto all liberality, which worketh through us thanksgiving to God." — 2 Corinthians 9:11 (ASV)

May be enriched unto all bountifulness. Again, the apostle uses the term bountifulness to express the nature of true liberality. This liberality is shown when, casting all our care upon God (1 Peter 5:7), we cheerfully use what belongs to us for whatever purposes He directs.

He teaches us that these are the true riches of believers: when, relying upon God's providence for the sufficiency of their support, they are not held back by distrust from doing good. Nor is it without good reason that he dignifies with the title of affluence the satisfying abundance of a simple mind, contented with its moderate share; for nothing is more famished and starved than the distrustful, who are tormented by an anxious desire to possess.

Which produces through you. He commends the alms they were about to give, considering another result: that they would tend to promote God's glory. He later also expresses this more distinctly, with amplification, saying: “Besides the ordinary advantage of love, they will also produce thanksgiving.” Now he amplifies by saying that thanks will be given to God by many, not merely for the liberality itself by which they have been helped, but also for the entire measure of piety among the Corinthians.

By the term administration, he means what he had undertaken at the request of the churches. What we render as functionem (service) is, in Greek, λειτουργία, a term that sometimes denotes a sacrifice and sometimes any publicly assigned office. Either meaning suits this passage well.

For, on the one hand, it is not unusual for alms to be called sacrifices. On the other hand, just as when offices are distributed among citizens, no one is reluctant to undertake the duty assigned to him, so in the Church, sharing with others should be regarded as a necessary duty. Therefore, the Corinthians and others, by assisting the fellow believers in Jerusalem, presented a sacrifice to God, or they discharged a proper service, one they were bound to fulfill. Paul was the minister of that sacrifice, but the term ministry or service may also be viewed as referring to the Corinthians. This distinction, however, is of no particular importance.