Deuteronomy 28:23
And thy heaven that is over thy head shall be brass, and the earth that is under thee shall be iron.
And the heaven that is over thy head shall be brass,.... Or like brass, not for its clearness, brightness, and splendour, or for its being spread out like a molten looking glass which was of brass, Job 37:18; but for its dryness and hardness, no moisture being in it, or passing through it; no showers of rain nor dew being let down from it:
and the earth that is under thee shall be iron; or like iron, hard and impenetrable, into which the plough and spade will not enter; nor anything spring out of it, for want of rain and dew to moisten and soften it. The same is said in Leviticus 26:19; only there is an inversion of the figures; there the heaven is said to be as iron, and the earth like brass, but signify the same thing.