Isaiah compares the enemy killing the people of Judah to a lion killing a weaker animal. Possible meanings are 1) lions make a sound not as loud as a roar just before they strike, or 2) the writer is using two words to mean the same thing. (See: [[rc://en/ta/man/jit/figs-metaphor]] and [[rc://en/ta/man/jit/figs-doublet]])