2 Corinthians 9:5-6

So I thought it necessary to urge the brothers to visit you in advance and finish the arrangements for the generous gift you had promised. Then it will be ready as a generous gift, not as one grudgingly given. Remember this: Whoever sows sparingly will also reap sparingly, and whoever sows generously will also reap generously.
2 Corinthians 9:5-6