The Authorized Version is here so far wrong, on technical terms, that it seems best to retranslate the whole passage: "And I wrote (the circumstances) in the deed, and sealed it, and took witnesses, and weighed the money in the balance.
And I took the purchase deed, that which was sealed (containing the offer and the conditions), and that which was open; and I gave the purchase deed unto Baruch the son of Neriah, the son of Maaseiah (rather, Makhseiah), in the sight of Hanameel my uncle, and in the sight of the witnesses who subscribed the purchase deed, in the sight of all the Jews who were sitting in the court of the guard.
And I charged Baruch before them, saying, Thus saith Jehovah Sabaoth, the God of Israel, Take these deeds, this sealed purchase deed, and this open deed; and put them into an earthen vessel, that they may continue many days."
The deed was made in two copies, so that if the open one were lost, or suspected of having been tampered with, an appeal might always be made to the sealed copy. The latter was to be placed in an earthen vessel, to preserve it from injury by damp.
It ought to be added that the words in verse 11, rendered "containing the offer and the conditions," are difficult. "Containing" is not expressed in the Hebrew, and "offer" is not the ordinary meaning, though etymologically justifiable.