An Everlasting Salvation !
But Israel shall be saved in the LORD with an everlasting salvation: ye shall not be ashamed nor confounded world without end.
Israel here is merely All of God's Elect, Chosen In Christ [Israel] before the foundation !
When is an Elect Person, Chosen in Christ ? Before the foundation Eph 1:4
4According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:
When are they saved ? Now this is going to shock most if not all of you, but an Elect one Chosen in Christ before the foundation, they have been saved from everlasting !
Everlasting has regard to no beginning and no ending Prov 8:23
23 I [Christ the wisdom of God] was set up from everlasting, from the beginning, or ever the earth was.
So what does that mean if we were Chosen in Christ before the foundation ? How long have we existed ?
Lets look at Ps 103:17
17But the mercy of the LORD is from everlasting to everlasting upon them that fear him, and his righteousness unto children's children;
Notice that David writes under the inspiration of God, that the Mercy of the LORD is FROM EVERLASTING, upon certain individuals " Those who are fearing Him in Time" to Everlasting.
Now are the Elect saved by Mercy ? Yes Titus 3:5
5Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost;
What can be more plainer ? When in God's Estimation were the Elect not reckoned as Vessels of Mercy ? Rom 9:22-23
22 What if God, willing to shew his wrath, and to make his power known, endured with much longsuffering the vessels of wrath fitted to destruction:
23And that he might make known the riches of his glory on the vessels of mercy, which he had afore prepared unto glory,
The Elect in the Eternal Purpose of God, have always been Saved by His Mercy in Christ, from Everlasting to Everlasting !
Amen Brother, God indeed viewed His Chosen Elect in Christ as Everlastingly Justified !