en_tn/deu/15/15.md

remember that you were a slave

The "you" includes their ancestors that were slaves for many years. AT: "remember that your people were once slaves" (See: rc://en/ta/man/translate/figs-you)

then you must take an awl and thrust it through his ear to a door

AT: "then you will place his head near a wooden door frame in your house, and then put the point of the awl through his earlobe into the wood"

awl

a sharp, pointed tool used to make a hole

forever

AT: “until the end of his life” or “until he dies”