The prophet speaks with confidence, concerning the issue of worldly minded men in their pursuits, because the Lord said it, and so plain, as when a man whispers in the ear of another. It is a general intimation that nothing of the kind shall prosper. Their houses shall be uninhabited, and their product nothing; yea, in measure shall they fail. Ten acres of vineyard, which; when fruitful, might be supposed to yield many hogsheads of wine, shall give out but one bath, which makes about eight gallons; and in their seeds an omen, which is in quantity a bushel, shall yield but an ephah, that is the tenth part of a gallon. Such hath ever been, and will be more or less, the disappointments of the carnal.
Related Commentaries of Isaiah 5:9
Isaiah 5:9-10
9 In mine ears said the LORD of hosts, Of a truth many houses shall be desolate, even great and fair, without inhabitant.
10 Yea, ten acres of vineyard shall yield one bath, and the seed of an homer shall yield an ephah.