Passage
And the light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of seven days, in the day that Jehovah bindeth up the breach of his people, and healeth the wound of their stroke.
And the light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of seven days, in the day that Jehovah bindeth up the breach of his people, and healeth the wound of their stroke.
Isaiah 30:24 and the oxen and the asses that till the ground shall eat salted provender, which hath been winnowed with the shovel and with the fan.
Isaiah 30:25 And there shall be upon every high mountain and upon every hill that is lifted up, brooks [and] water-courses, in the day of the great slaughter, when the towers fall.
Isaiah 30:26 And the light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of seven days, in the day that Jehovah bindeth up the breach of his people, and healeth the wound of their stroke.
Isaiah 30:27 Behold, the name of Jehovah cometh from far, burning [with] his anger a grievous conflagration; his lips are full of indignation, and his tongue as a consuming fire;
Isaiah 30:28 and his breath as an overflowing torrent, which reacheth even to the neck, to sift the nations with the sieve of destruction, and [to put] a bridle into the jaws of the peoples, that causeth them to go astray.
The verse centers on "light", "moon", "shall", and "sevenfold". It is saying that the verse draws attention to "light" and "moon", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 25's "And there shall be upon every high..." into verse 27's "Behold the name of Jehovah cometh from...", so "light" and "moon" belong inside that flow. In Isaiah context, the local focus is the Holy One of Israel, judgment and restoration, the servant of the LORD, and Zion's hope.
A plain takeaway is to answer the verse's own emphasis on "light" and "moon" with trust shaped by these words, not by a vague optimism outside the passage.