Deuteronomy 14
22 Ref You shall surely tithe all the increase of your seed, that which comes forth from the field year by year.
23 Ref You shall eat before Yahweh your God, in the place which he shall choose, to cause his name to dwell there, the tithe of your grain, of your new wine, and of your oil, and the firstborn of your herd and of your flock; that you may learn to fear Yahweh your God always.