Charles Ellicott Commentary Jeremiah 9:12

"Who is the wise man, that may understand this? and [who is] he to whom the mouth of Jehovah hath spoken, that he may declare it? wherefore is the land perished and burned up like a wilderness, so that none passeth through?" — Jeremiah 9:12 (ASV)

Who is the wise man...? — Sage and prophet are alike called on to state why the misery of which Jeremiah speaks is to come upon the people. But they are asked in vain, and Jehovah, through the prophet, makes answer to Himself.

That none passeth through. — The English is ambiguous. “That” stands either for a relative with “wilderness” as its antecedent, or as a conjunction equivalent to “so that.” Better, and none there is that passes through.