There is one who scatters, and yet increases all the more, and there is one who withholds what is justly due, and yet it results only in want. The generous man will be prosperous, and he who waters will himself be watered.
Now this I say, he who sows sparingly will also reap sparingly, and he who sows bountifully will also reap bountifully. Each one must 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, so that always having all sufficiency in everything, you may have an abundance for every good deed.
2 Corinthians 9:6-8