2 Corinthians 9: 6-10

Whoever sows sparingly will also reap sparingly,
   and whoever sows bountifully will also reap bountifully.
Each must do as already determined, without sadness or compulsion,
   for God loves a cheerful giver.
Moreover, God is able to make every grace abundant for you,
   so that in all things, always having all you need,
   you may have an abundance for every good work.
As it is written:

   He scatters abroad, he gives to the poor;
      his righteousness endures forever.

The one who supplies seed to the sower and bread for food
   will supply and multiply your seed
   and increase the harvest of your righteousness.