O earth, earth, earth,.... Not Coniah himself, an earthly man; but either the inhabitants of the whole earth, or of the land of Israel; or rather the earth, on which men dwell, is here called upon as a witness to what is after said; to rebuke the stupidity of the people, and to quicken their attention to somewhat very remarkable and worthy of notice, and therefore the word is repeated three times.
Some think reference is had to the land from which, and that to which, the Jews removed, and the land of Israel, through which they passed. So the Targum,"out of his own land they carried him captive into another land; O land of Israel, receive the words of the Lord.'