Deuteronomy 14:22-23

22Thou shalt surely tithe all the increase of thy seed, that which cometh forth from the field year by year. 23And thou shalt eat before Jehovah thy God, in the place which he shall choose, to cause his name to dwell there, the tithe of thy grain, of thy new wine, and of thine oil, and the firstlings of thy herd and of thy flock; that thou mayest learn to fear Jehovah thy God always.