V. The effect of all this should be extraordinary comfort and joy to the people of God, v. 26. Light shall increase; that is, knowledge shall increase (when the prophecies are accomplished they shall be fully understood) or rather triumph shall: the light of the joy that is sown for the righteous shall now come up with a great increase. The light of the moon shall become as bright and as strong as that of the sun, and that of the sun shall increase proportionably and be as the light of seven days; every one shall be much more cheerful and appear much more pleasant than usual. There shall be a high spring-tide of joy in Judah and Jerusalem, upon occasion of the ruin of the Assyrian army, when the Lord binds up the breach of his people, not only saves them from being further wounded, but heals the wounds that have been given them by this invasion and makes up all their losses. The great distress they were reduced to, their despair of relief, and the suddenness of their deliverance, would much augment their joy. This is not unfitly applied by many to the light which the gospel brought into the world to those that sat in darkness, which has far exceeded the Old-Testament light as that of the sun does that of the moon, and which proclaims healing to the broken-hearted, and the binding up of their wounds.