en_tn/isa/40/06.md

All flesh is grass

The word "flesh" refers to people. This means that people are weak and will die. (See: rc://en/ta/man/translate/figs-metaphor)

covenant faithfulness

Possible meanings are 1) covenant faithfulness or 2) beauty. See how you translated "covenant faithfulness" in Isaiah 16:5.

is like the flower of the field

AT: "ends quickly like a flower of field" (See: rc://en/ta/man/translate/figs-simile)

humanity is grass

"people die as quickly as grass in the heat" (See: rc://en/ta/man/translate/figs-metaphor)

the word of our God will stand forever

"what God says will stand forever" (See: rc://en/ta/man/translate/figs-metonymy)