Deuteronomy 14:28
At the end of three years you shall bring forth all the tithe of your increase the same year, and shall lay it up inside your gates.
Deuteronomy 14:22
You shall truly tithe all the increase of your seed that the field brings forth year by year.
Amos 4:4
Come to Bethel and transgress; to Gilgal and multiply transgressing at Gilgal. And bring your sacrifices for the morning, your tithes for three years;
Deuteronomy 26:12-15
When you have made an end of tithing all the tithes of your increase the third year, the year of tithing, and have given it to the Levite, the stranger, the fatherless, and the widow (that they may eat inside your gates and be filled),