2 Corinthians 9:7

Each person should give what he has decided to in his heart, not grudgingly, nor out of a feeling that he has to, for God loves a cheerful giver.

2 Corinthians 8:11-12

So, now finish doing it also, so that just as you were eager to want to, you will also [be eager to] finish it, according to your ability.

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
For if the eagerness is there, [then] whatever a person has [to give] is acceptable, and not what he does not have.
2 Corinthians 9:7
Each person should give what he has decided to in his heart, not grudgingly, nor out of a feeling that he has to, for God loves a cheerful giver.