“Say to those who daub it with whitewash that it will fall. There will be an overflowing rainstorm, and you, O great hailstones, will fall, and a stormy wind will rend it.”
Yahweh now declares a vivid picture of judgment. The flimsy wall which the prophets have tried to make respectable will collapse under a great storm. It will be tested by drenching rain, great hailstones and a stormy wind and will be unable to stand the test. It can be compared with those who build their lives on sand because they do not receive the words of Christ (Matthew 7:26-27). They too will be devastated by the judgment.
Note the change to addressing the hailstones. This vivid way of making things personal in the middle of a sentence or paragraph is found again and again in Scripture. Many however repoint the Hebrew to mean ‘and I will cause great hailstones to fall'.