Giving is an outward expression of the inward commitment we have made to put God first in every area of our lives. When we give, we are identifying with the heart of God, in that we are demonstrating His generous character.
"But this I say: He who sows sparingly will also reap sparingly, and he who sows bountifully will also reap bountifully. So let each one give as he purposes in his heart, not grudgingly or of necessity; for God loves a cheerful giver."
2 Corinthians 9:6-7