1 Corinthians 16:2
On the first day of the week let each of you put aside a sum from his weekly gains, so that the money may not have to be collected when I come.
2 Corinthians 8:10
But I will tell you what I think about it; it is to your interest to go on with this enterprise, for you started it last year, you were the first not merely to do anything but to want to do anything.
2 Corinthians 8:12
If only one is ready to give, according to his means, it is acceptable; he is not asked to give what he has not got.
2 Corinthians 9:5-11
That is why I have thought it necessary to ask these brothers to go on in advance and get your promised contribution ready in good time. I want it to be forthcoming as a generous gift, not as money wrung out of you.