2 Corinthians 9: 6 - 8
Now this I say, he who sows sparingly shall also reap sparingly; and he who sows bountifully shall also reap bountifully. Let each one do just as he has purposed in his heart; not grudgingly or under compulsion; for God loves a cheerful giver. And God is able to make all grace abound to you, that always having all sufficiency in everything, you may have an abundance for every good deed.