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.