“From Romans to Revelation, there is no passage that instructs Christians to give a required 10 percent. In fact, we find the opposite—under God’s new way, there’s no minimum and no maximum. It’s entirely up to us: ‘Each man should give what he has decided in his heart to give, not reluctantly or under compulsion, for God loves a cheerful giver.’ (2 Cor. 9:7) So why give? Three good reasons for giving are discussed in the New Testament. First we’re told to give when there’s a need (2 Cor. 8:12). Next, we’re told to share with others when we have abundance (2 Cor. 8:13-15). And finally, we see the early church giving because they were excited about the message and wanted to see a spiritual ‘harvest’ from their giving (2 Cor. 9:7-10). You’ve got to admit that it’s exciting to participate alongside the God of the universe, collaborating in the work that he is doing. Now there’s a reason to give!” (from “God Without Religion”)