en_tn_condensed/exo/18/18.md

You will surely wear yourselves out

"you will surely make yourselves very tired"

This burden is too heavy for you

Jethro speaks of the hard work that Moses is doing as if it were a physical burden that Moses was carrying. Alternate translation: "This work is too much for you" (See: rc://en/ta/man/translate/figs-metaphor)