en_tn/deu/31/16.md

you will sleep with your fathers

AT: "you will die and join your ancestors who have died before you" (See: rc://en/ta/man/translate/figs-euphemism)

will rise up and act like prostitutes

This means the Israelites will start to be unfaithful to Yahweh after Moses dies. (See: rc://en/ta/man/translate/figs-simile)