Thus, any tithe from the land, whether from the seed of the land or the fruit of the trees, belongs to the Lord; it is holy to the Lord. Leviticus 27:30.

Bring the full tithe into the storehouse, that there may be food in my house. And thereby put me to the test, says the Lord of hosts, if I will not open the windows of heaven for you, and pour down for you a blessing, until there is no more need. Malachi 3:10