Deuteronomy 26:1-3

“Then it shall be, when you enter the land which the Lord your God is giving you as an inheritance, and you take possession of it and live in it,

that you shall take some of the first of all the produce of the ground which you bring in from your land that the Lord your God gives you, and you shall put it in a basket and go to the place where the Lord your God chooses to establish His name.

And you shall go to the priest who is in office at that time and say to him, ‘I declare today to the Lord my God that I have entered the land which the Lord swore to our fathers to give us.’