4  In the extremity of evils, Christ's glorious kingdom should appear to those who are left alive, Isa 4:1-2.
They shall be holy, Isa 4:3.
Purged, Isa 4:4.
A glory and a defence upon them, Isa 4:5.
A sanctuary from evils, Isa 4:6.

4:2 In that day - About that time: when the Lord shall have washed away the filth of Zion, by those dreadful judgments now described.The branch - The Messiah. The earth - The land which for the sins of the people was made barren, upon their return to Christ shall recover its fertility. Under this one mercy he includes all temporal blessings, together with spiritual and eternal. For them - That shall survive all the forementioned calamities.

4:3 Holy - Shall be really holy. Jerusalem - Of the people living in or belonging to Jerusalem.

4:4 When - This shall be accomplished when God hath throughly cleansed the Jewish nation from their sins. The blood - The blood - guiltiness, and especially that of killing the Lord of life. Burning - This is opposed to the former legal way of purification, which was by water.The Holy Spirit of old accompanied the preaching of the gospel, and did this work in part, and will do it fully. This spirit may well be called a spirit of judgment, because it executes judgment in the church, and in the consciences of men, separating the precious from the vile, convincing men of sin, and righteousness, and judgment. And the same spirit may be fitly called the spirit of burning, because he doth burn up and consume the dross which is in the church, and in the hearts of men, and inflames the souls of believers with love to God, and zeal for his glory.

4:5 Create - Will in a marvellous manner produce, as it were by a new creation. A cloud - A pillar of cloud and fire, like that wherewith he directed the Israelites, when they came out of Egypt: whereby he implies, that God would be their protector, and their glory.The glory - Upon all that church and people, which God will make so glorious; upon all holy assemblies of sincere Christians.

4:6 And there - Or, he, the Lord, shall be a tabernacle, to defend them from the heat of the sun, and other injuries of the weather.

8 

8:5 There came to him a centurion - A captain of a hundred Roman soldiers. Probably he came a little way toward him, and then went back. He thought himself not worthy to come in person, and therefore spoke the words that follow by his messengers. As it is not unusual in all languages, so in the Hebrew it is peculiarly frequent, to ascribe to a person himself the thing which is done, and the words which are spoken by his order. And accordingly St.Matthew relates as said by the centurion himself, what others said by order from him. An instance of the same kind we have in the case of Zebedee's children. From St. Matthew, Mat 20:20, we learn it was their mother that spoke those words, which, Mar 10:35, Mar 10:37, themselves are said to speak; because she was
only their mouth. Yet from Mat 8:13, Go thy way home, it appears he at
length came in person, probably on hearing that Jesus was nearer to his house than he apprehended when he sent the second message by his friends. Luk 7:1.

8:8  The centurion answered - By his second messengers.

8:9  For I am a man under authority - I am only an inferior officer: and what I command, is done even in my absence: how much more what thou commandest, who art Lord of all!

8:10  I have not found so great faith, no, not in Israel - For the centurion was not an Israelite.

8:11  Many from the farthest parts of the earth shall embrace the terms and enjoy the rewards of the Gospel covenant established with Abraham. But the Jews, who have the first title to them, shall be shut out from the feast; from grace here, and hereafter from glory. Luk 13:29.