## I challenge the ranks of Israel ##

This is an insulting boast that challenges any soldier in the army of Israel to battle.  (See: [[rc://en/ta/man/translate/figs-synecdoche]])

## they were discouraged and greatly afraid ##

The words "discouraged" and "greatly afraid" mean basically the same thing and are combined for emphasis.  (See: [[rc://en/ta/man/translate/figs-doublet]])