And Samuel said, “Has the LORD as great delight in burnt offerings and sacrifices, as in obeying the voice of the LORD? Behold, to obey is better than sacrifice, and to listen than the fat of rams. — 1 Samuel 15:22 (ESV)
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 Corinthians 9:7