2 Corinthians 9:6–8: Generosity Is Willing Giving
Generosity in one word is willing: a settled, cheerful giving decided in the heart before God. Paul rules out pressure and grounds giving in God's grace, not in a promised financial return.
1 Peter 4:10–11: Serve Your Church With Your Gifts
Peter treats the church's shared life as a stewardship of God's grace: each person's gift exists for others, and both speaking and serving are to be done in dependence on God's supply so that he is glorified.
2 Corinthians 9:6–15: Cheerful Giving, Not Guaranteed Gain
Paul urges the Corinthians to prepare their gift willingly rather than under pressure. The harvest language of sowing and reaping sits inside a larger promise that God supplies sufficiency for every good work, so giving overflows in thanksgiving to him.