2 Corinthians 9:6-8

But this I say, He that soweth sparingly shall reap also sparingly; and he that soweth bountifully shall reap also bountifully. Let each man do according as he hath purposed in his heart: not grudgingly, or of necessity: for God loveth a cheerful giver. And God is able to make all grace abound unto you; that ye, having always all sufficiency in everything, may abound unto every good work