2 Corinthians 9:6-8 (NKJV)
[6] But this I say: He who sows sparingly will also reap sparingly, and he who sows bountifully will also reap bountifully.
[7 ]So let each one give as he purposes in his heart, not grudgingly or of necessity; for God loves a cheerful giver.
[8] And God is able to make all grace abound toward you, that you, always having all sufficiency in all things, may have an abundance for every good work.