Giving is at the foundation of God's Church and is a sincere form of worship. The Old testament refers to bringing to God "the firstfruits of our labor," taken from the top. It should be done cheerfully, systematically, proportionally, and sacrificially.
"Give, and it will be given unto you. A good measure, pressed down, shaken together and running over, will be poured upon your lap. For with the measure you use, it will be measured to you."
- Luke 6:38