Here’s a quotation that’s movingly full, deep and rich in its expression of what salvation means, in the book of Isaiah.
The problem is rebellion, self-exaltation, injustice, alienation, and resultatnt devastation; the solution must deal with all of these. … Salvation must produce people who submit to God, trusting him to supply all their needs. It must result in reconciliation between God and humans, and between humans. It must include deliverance from physical and spiritual bondage. It must involve forgiveness and cleansing. It must produce people who are committed to the justice prescribed in their covenant with God. It must issue in a glad desire to declare the glory, the uniqueness and the salvation of God to all the world.
From J.N.Oswalt, ‘Isaiah’, New Dictionary of Biblical Theology, page 221.