en_tn/2ch/25/10.md

the army of Israel ... the army that had come to him from Ephraim

These are two ways to describe the same army.

So their anger was greatly kindled

Here the increase in their anger is spoken of as if it were a growing fire inside them. Alternate translation: "So their anger began to burn within them like a fire" (See: rc://en/ta/man/translate/figs-metaphor)

in fierce anger

"very angry"