Deuteronomy 26:2-4

2that thou shalt take of the first of all the fruit of the ground, which thou shalt bring in from thy land that the LORD thy God giveth thee; and thou shalt put it in a basket, and shalt go unto the place which the LORD thy God shall choose to cause his name to dwell there.

3And thou shalt come unto the priest that shall be in those days, and say unto him, I profess this day unto the LORD thy God, that I am come unto the land which the LORD sware unto our fathers for to give us.

4And the priest shall take the basket out of thine hand, and set it down before the altar of the LORD thy God.