Verses 1–4
ISAIAH - CHAPTER 26
A SONG OF PRAISE FOR REDEMPTION
1. "In that day", an expression used repeatedly in this section, is "the day of the Lord" wherein His mighty purpose is brought to its glorious climax, (Isaiah 24:21; Isaiah 25:9; Isaiah 26:1; Isaiah 27:1-2; Isaiah 27:12-13).
2. It is, preeminently, a day of salvation, (Isaiah 12:2; Isaiah 49:26; Isaiah 35:4; Jeremiah 23:6; Jeremiah 30:7; Ezekiel 37:23).
3. Jerusalem, the strong, righteous, faithful "city of habitation", and "city of the Great King" (Isaiah 1:26; Psalms 107:7; Psalms 101:8; Psalms 48:1-3), is set in contrast to "the city of the nations" (Isaiah 25:3); the saving strength of Jehovah will be the only "wall and bulwark" that she needs.
4. A redeemed Israel, whose heart is now truly devoted to Jehovah in loving loyalty, is "the righteous nation" - though it will later be seen that a multitude "from every kindred, tongue, tribe and nation" will be engrafted, by faith, into this sphere and blessedness of covenant fellowship, (1 Peter 2:7-12; Acts 15:14-18; Romans 9:22-27; Revelation 5:9-10; Revelation 7:9-10).
5. "Perfect peace" describes the blessedness of the trusting soul:
"Stayed upon Jehovah, Hearts are fully blest -Finding, as He promised, Perfect peace and rest", (vs. 12; Psalms 72:3; Psalms 72:7; John 14:27).
6. Thus, the admonition of verse 4: "Trust ye in the LORD for ever: for in the LORD JEHOVAH is everlasting (Rock of Ages) strength", (Isaiah 12:2; Isaiah 50:10; Psalms 18:1-2; Isaiah 17:10; Isaiah 30:29; Isaiah 44:6-8; Deuteronomy 32:4; Deuteronomy 32:15).