We should be generous, just as God is:

2 Corinthians 9:6-8 But this I say, "He which sows sparingly shall reap also sparingly; and he which sows bountifully shall reap also bountifully. Every man according as he purposes in his heart, so let him give: not grudgingly, or of necessity: for God loves a cheerful giver. And God is able to make all grace abount toward you; that you, always having all sufficiency in all things, may abound to every good work."