V.1-4 Very often, when you read the Old Testament prophets, using the words “In that day,” it is referring to when Israel shall have gone through the dreadful punishment in the tribulation (“D” on your chart) for their past sins, and have come into the blessings of the millennium. Notice the beautiful words, “salvation,” “righteousness,” “truth,” “peace,” “trusts,” “everlasting,” “the Lord Jehovah.”
V.3 A good verse to memorize. The verse before applies to the whole nation, but this verse is very individual.
V.5-11 There will be many unbelievers on the earth in those seven years. Verse 11 means that when the unbelievers will see this punishment coming on them, they won’t believe that God is causing this. But later, they will, and be ashamed.
But verses 7 to 9 show that there shall be some believers among them.
V.12-13 The believing remnant can’t boast in anything but the name of the Lord!
V.14 Those nations which would not believe God shall be completely destroyed. Notice the words “dead men,” here and in verse 19. Here it refers to the punishment to fall on the wicked, rebellious Israelites. Verse 19 refers to those, the remnant in the future days in Israel, who turn to the Lord. It is going to be a resurrection of these ones.
V.15-19 Whereas today the Jews who are back on their land of Israel, are proud of themselves. Here we hear of what that believing remnant will say. They don’t depend on themselves anymore. They depend only on God.
V.20-21 The days are going to be so terrible, that God is here telling the remnant to hide until the tribulation is over.