1 Corinthians 16:2
Every first day of the week let each of you lay by him something in store, according as he hath prospered; that the collections may not have to be made when I come.
2 Corinthians 8:10
And I only give an opinion in this matter. For this is expedient for you, who began before others, not only to do, but also to be willing, a year ago.
2 Corinthians 8:12
For if there be first the willing mind, it is accepted according to what a man hath, not according to what he hath not.
2 Corinthians 9:5-11
I thought it necessary therefore to exhort the brethren to go before to you, and make up beforehand your bounty, which was already announced, that the same might be ready, as a matter of bounty, and not of covetousness.