The Scofield Bible Commentary, by Cyrus Ingerson Scofield, [1917], at sacred-texts.com
Ariel
"Lion of God", signifies Jerusalem.
And I will camp
Here, as often in prophecy, and especially in Isaiah, the near and far horizons blend. The near view is of Sennacherib's invasion and the destruction of the Assyrian host by the angel of the Lord (Isaiah 36, 37); the far view is that of the final gathering of the Gentile hosts against Jerusalem at the end of the great tribulation (Psa 2:5); (Rev 7:14) when a still greater deliverance will be wrought. (See "Times of the Gentiles," (Luk 21:24); (Rev 16:14). The same remark applies also to (Isa 28:14-18) where there is a near reference to the Egyptian alliance ("we have made a covenant," etc.), while the reference to the stone (Isa 29:16) carries the meaning forward to the end-time, and the covenant of unbelieving Israel with the Beast. (Dan 9:27).
redeemed
(See Scofield) - (Isa 59:20).
(See Scofield) - (Exo 14:30).