Isaiah 4

3. left in Zion--equivalent to the "escaped of Israel" ( Isaiah 4:2 ).
shall be called--shall be ( Isaiah 9:6 ).
holy--( Isaiah 52:1 , 60:21 , Revelation 21:27 ).
written--in the book of life, antitypically ( Philippians 4:3 , Revelation 3:5 , 17:8 ). Primarily, in the register kept of Israel's families and tribes.
living--not "blotted out" from the registry, as dead; but written there as among the "escaped of Israel" ( Daniel 12:1 , Ezekiel 13:9 ). To the elect of Israel, rather than the saved in general, the special reference is here ( Joel 3:17 ).

4. When--that is, After.
washed--( Zechariah 13:1 ).
filth--moral ( Isaiah 1:21-25 ).
daughters of Zion--same as in Isaiah 3:16 .
purged--purified by judgments; destroying the ungodly, correcting and refining the godly.
blood--( Isaiah 1:15 ).
spirit--Whatever God does in the universe, He does by His Spirit, "without the hand" of man ( Job 34:20 , Psalms 104:30 ). Here He is represented using His power as Judge.
burning--( Matthew 3:11 Matthew 3:12 ). The same Holy Ghost, who sanctifies believers by the fire of affliction ( Malachi 3:2 Malachi 3:3 ), dooms unbelievers to the fire of perdition ( 1 Corinthians 3:13-15 ).

5. create--The "new creation" needs as much God's creative omnipotence, as the material creation ( 2 Corinthians 4:6 , Ephesians 2:10 ). So it shall be in the case of the Holy Jerusalem to come ( Isaiah 65:17 Isaiah 65:18 ).
upon--The pillar of cloud stood over the tabernacle, as symbol of God's favor and presence ( Exodus 13:21 Exodus 13:22 , Psalms 91:1 ). Both on individual families ("every dwelling") and on the general sacred "assemblies" ( Leviticus 23:2 ). The "cloud" became a "fire" by night in order to be seen by the Lord's people.
upon all the glory--"upon the glorious whole"; namely, the Lord's people and sanctuary [MAURER]. May it not mean, "Upon whatever the glory (the Shekinah spoken of in the previous clause) shall rest, there shall be a defense." The symbol of His presence shall ensure also safety. So it was to Israel against the Egyptians at the Red Sea ( Exodus 14:19 Exodus 14:20 ). So it shall be to literal Jerusalem hereafter ( Zechariah 2:5 ). Also to the Church, the spiritual "Zion" ( Isaiah 32:18 , 33:15-17 , Hebrews 12:22 ).
tabernacle--Christ's body ( John 1:14 ). "The Word 'tabernacled' (Greek for 'dwelt') among us" ( John 2:21 , Hebrews 8:2 ). It is a "shadow from the heat" and "refuge from the storm" of divine wrath against man's sins ( Isaiah 25:4 ). Heat and storms are violent in the East; so that a portable tent is a needful part of a traveller's outfit. Such shall be God's wrath hereafter, from which the "escaped of Israel" shall be sheltered by Jesus Christ ( Isaiah 26:20 Isaiah 26:21 , 32:2 ).
covert--answering to "defense" ( Isaiah 4:5 ). The Hebrew for defense in Isaiah 4:5 , is "covering"; the lid of the ark or mercy seat was named from the same Hebrew word, caphar; the propitiatory; for it, being sprinkled with blood by the high priest once a year, on the day of atonement, covered the people typically from wrath. Jesus Christ is the true Mercy Seat, on whom the Shekinah rested, the propitiatory, or atonement, beneath whom the law is kept, as it was literally within the ark, and man is covered from the storm. The redeemed Israel shall also be, by union with Him, a tabernacle for God's glory, which, unlike that in the wilderness, shall not be taken down ( Isaiah 38:20 ).