en_tn/ezk/04/17.md

every man will be appalled at his brother

Here the word "brother" simply refers to another person. Possible meanings are 1) "everyone will look at his brother and worry that they are not eating enough " or 2) "every one of them will be dismayed" (See: rc://en/ta/man/jit/figs-explicit)

they will waste away

The phrase "waste away" is usually used of flesh or wood rotting. Here it is a metaphor for people becoming thin and dying because they have no food. (See: rc://en/ta/man/jit/figs-metaphor)