Isaiah 4: The Branch of the Lord

I. Jerusalem the redeemed (4:1)

This verse is more appropriately belong to the end of Chapter 3, where it described men falling by the sword, causing a shortage of men. "Seven women" simply means uncounted number of women looking for a scarce man to be their husband. In those days, unmarried or women without children are considered cursed and was a "reproach" to them.

II. The branch of Jehovah (4:2)

"In that day the branch of the LORD shall be beautiful and glorious, and the fruit of the land shall be the pride and honor of the survivors of Israel."

The "branch of the Lord" often refers to the coming of the Messiah. See Jeremiah 23:5-6; Jeremiah 33:15; Zechariah 3:8; Zechariah 6:12.  The Messiah will come twice and often the prophets do not explain this. We are able to understand it better because we know that the first coming has passed and we know which Messianic prophecies came true in His first coming.

When Jesus came the first time, he wasn't "beautiful and glorious."  In fact, Isaiah said in 53:2 about his first coming:  "he had no form or majesty that we should look at him, and no beauty that we should desire him." 

But in his second coming, he will come on a white horse with majesty and power. (Rev. 19:11-16) After He has defeated the nations at the battle of Armageddon, Jesus will set up His headquarters in Jerusalem. Israel will become the apex of perfection in all areas - politics, social, agriculture, technology and so on. The "fruit" of the land includes all these and become the pride and honor for all the Armageddon survivors. 

This perfect governance of Christ from Israel will last 1000 years, before Satan is released and cause another rebellion. At that time, God will destroy the whole world and re-create a new world and new Jerusalem.

Peter also described the "day of the Lord", but he did not explain that there's a 1000 year period between the coming of the Lord and the destruction:

"But the day of the Lord will come like a thief, and then the heavens will pass away with a roar, and the heavenly bodiesb will be burned up and dissolved, and the earth and the works that are done on it will be exposed." (2 Party 3:10)

The two passages could be combined this way to make the story complete:  "But the day of the Lord will come like a thief, [and] in that day the branch of the Lord shall be beautiful and glorious, and the fruit of the land shall be the pride and honor of the survivors of Israel [for 1000 years], and then the heavens will pass away with a roar, and the heavenly bodies will be burned up and dissolved, and the earth and the works that are done on it will be exposed."

III. The escaped of Israel—the remnant (4:3-4)

In the 1000 years of Jesus' rule in Jerusalem, the inhabitants will be called Holy, and this is through the purification by "burning" of those who rejects Christ. At this time, everyone who remains will submit to Christ and confess Him as their savior; they are not sinless, but will be forgiven just like we are.

IV. Protection and guidance for the New Zion (4:5-6)

The whole Mount Zion and "her assemblies" (the areas across the current Temple Mount) will be miraculously protected from harsh weather and there will always be light even at night.