2 Corinthians 9:7

Everyone is to give what he has made up his mind to give; there is to be no grudging or compulsion about it, for God loves the giver who gives cheerfully.

2 Corinthians 8:11-12

Now, carry it through, so that your readiness to take it up may be equalled by the way you carry it through ??so far as your means allow.

Treasury of Scripture Knowledge

Summary

Speak unto the children of Israel, that they bring me an offering: of every man that giveth it willingly with his heart ye shall take my offering.

Bible References

Willingly

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 9:7
Everyone is to give what he has made up his mind to give; there is to be no grudging or compulsion about it, for God loves the giver who gives cheerfully.