Submit yourselves therefore to God. Resist the devil, and he will flee from you. Draw near to God, and he will draw near to you. Cleanse your hands, you sinners, and purify your hearts, you double-minded. — James 4:7-8 (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