2 Corinthians 9:6-8
6  Remember this: Whoever sows sparingly will also reap sparingly, and whoever sows
generously will also reap generously.  7  Each of you should give what you have decided in your heart to give, not reluctantly or under compulsion, for God loves a cheerful giver.  8  And God is able to bless you abundantly, so that in all things at all times, having all that you need, you will abound in every good work.