Deuteronomy 14:28

14:28 At the end of every three years you must bring all the tithe of your produce, in that very year, and you must store it up in your villages.

Deuteronomy 26:4

26:4 The priest will then take the basket from you and set it before the altar of the Lord your God.

Deuteronomy 26:10

26:10 So now, look! I have brought the first of the ground’s produce that you, Lord, have given me.” Then you must set it down before the Lord your God and worship before him.