1 Corinthians 16:2
On the first day of the week, let each of you lay by him, and treasure up as he has prospered, that there may be no collections when I come.
2 Corinthians 8:10
And I give my judgment in this matter; for this is profitable for you, who began not only to do, but to show a willing mind, a year ago.
2 Corinthians 8:12
For if there is a readiness of mind, one is accepted according to what he has, not according to what he has not.
2 Corinthians 9:5-11
Therefore, I thought it necessary to exhort the brethren to go before to you, and make ready beforehand your bounty, which has been so much talked of before, that this might be ready as a bounty, and not as a gift extorted from you.