Leviticus 27:30
And all the tithe of the land, whether of the seed of the land, or of the fruit of the tree, is the LORD's: it is holy to the LORD.
Torrey's Topical Textbook—AKJV

Numbers 18:21
And, behold, I have given the children of Levi all the tenth in Israel for an inheritance, for their service which they serve, even the service of the tabernacle of the congregation.
Torrey's Topical Textbook—AKJV

Deuteronomy 14:22
You shall truly tithe all the increase of your seed, that the field brings forth year by year.
Torrey's Topical Textbook—AKJV