Deuteronomy 12:1

These are the statutes and judgments which ye shall observe to
do
Which are recorded in this and the following chapters; here a new discourse begins, and which perhaps was delivered at another time, and respects things that were to be observed:

in the land which the Lord God of thy fathers giveth thee to possess
it;
the land of Canaan, often described by this circumlocution, to put them in mind that it was promised to their fathers by their covenant God, was his gift to them, and which they would quickly be in the possession of; and therefore when in it should be careful to observe the statutes and judgments of God constantly:

[even] all the days that ye live upon the earth;
or land, the land of Canaan; for though there were some laws binding upon them, live where they would, there were others peculiar to the land of Canaan, which they were to observe as long as they and their posterity lived there; see ( 1 Kings 8:40 ) .