Cast your bread upon the waters. For you will find it after many days.
Christ followers are generous because the one we follow is generosity incarnate. "God so loved the world that he gave his only son". Part of the message of the kingdom is generosity. Recipients of the King's generosity themselves in turn are generous to those in need. The scriptures promises that when you give to the hungry or poor ones, God will repay you. That's not the reason we give away stuff, but a benefit. Giving begets giving. That's a kingdom principle, "give and it shall be given".