Deuteronomy 14:28

At the end of three years thou shalt bring forth all the tithe of thine increase the same year, and shalt lay it up within thy gates;

Deuteronomy 14:22

Thou shalt truly tithe all the increase of thy seed, the produce of the field, year by year.

Amos 4:4

Come to Bethel, and transgress; at Gilgal multiply transgression; and bring your sacrifices in the morning, your tithes every three days,

Deuteronomy 26:12-15

When thou hast made an end of tithing all the tithes of thy produce in the third year, the year of tithing, thou shalt give it to the Levite, to the stranger, to the fatherless, and to the widow, that they may eat in thy gates, and be filled;

Treasury of Scripture Knowledge

Summary

At the end of three years thou shalt bring forth all the tithe of thine increase the same year, and shalt lay it up within thy gates:

Bible References

The end

Deuteronomy 14:22
Thou shalt truly tithe all the increase of thy seed, the produce of the field, year by year.
Deuteronomy 26:12
When thou hast made an end of tithing all the tithes of thy produce in the third year, the year of tithing, thou shalt give it to the Levite, to the stranger, to the fatherless, and to the widow, that they may eat in thy gates, and be filled;
Amos 4:4
Come to Bethel, and transgress; at Gilgal multiply transgression; and bring your sacrifices in the morning, your tithes every three days,