Charles Ellicott Commentary Isaiah 33:7

"Behold, their valiant ones cry without; the ambassadors of peace weep bitterly." — Isaiah 33:7 (ASV)

Behold, their valiant ones. —Literally, their lions of God. Hebrew, Arielam, probably with a reference to the “Ariel” of Isaiah 29:1, the lion-like heroes of the lion-like city. (Compare to 2 Samuel 23:20; 1 Chronicles 11:22.) The whole passage paints the panic caused by the approach of Sennacherib.

The ambassadors of peace. —The envoys sent by Hezekiah to Sennacherib at Lachish. They weep bitterly at the hard conditions imposed on them, which may be either those of 2 Kings 18:14, or some yet harder terms, demanding the surrender of the city.