en_tn_condensed/isa/01/24.md

General Information:

Isaiah begins to speak Yahweh's words to the people of Judah in the form of a poem. (See: rc://en/ta/man/jit/figs-parallelism)

Therefore

"For that reason"

this is the declaration of the Lord Yahweh of hosts, the Mighty One of Israel

Yahweh speaks of himself by name to express the certainty of what he is declaring. Alternate translation: "this is what the Lord Yahweh of hosts, the Mighty One of Israel, has declared" or "this is what I, Yahweh, the Mighty One of Israel, have declared" (See: rc://en/ta/man/jit/figs-123person)

I will comfort myself concerning my adversaries

Yahweh will comfort himself by taking just vengeance on his adversaries.

I will ... avenge myself against my enemies

"I will justly punish my enemies"