In Deuteronomy 14:23, scripture clearly states "Bring this tithe to the designated place of worship—the place the LORD your God chooses for his name to be honored—and eat it there in his presence. This applies to your tithes of grain, new wine, olive oil, and the firstborn males of your flocks and herds. Doing this will teach you always to fear the LORD your God."
God is generous and so he calls us to be as well. What we do with what God has given us shows the world where our hearts are at and helps proclaim the gospel. We want to Glorify God with every area of our lives, and that includes what we do with our finances.