en_tn_condensed/jos/01/08.md

Yahweh continues speaking to Joshua.

You will always speak

This means that Joshua should speak of the book of the law often. The word "always" adds emphasis or intensity. (See: rc://en/ta/man/translate/figs-hyperbole)

prosperous and successful

These two words mean basically the same thing and emphasize great prosperity. (See: rc://en/ta/man/translate/figs-doublet)