Deuteronomy 14:22-23

Living Bible

²² “You must tithe all of your crops every year. ²³ Bring this tithe to eat before the Lord your God at the place he shall choose as his sanctuary; this applies to your tithes of grain, new wine, olive oil, and the firstborn of your flocks and herds. The purpose of tithing is to teach you always to put God first in your lives.