Adam Clarke on Jeremiah 22:6

Thou art Gilead unto me, and the head of Lebanon - Perhaps in allusion, says Dahler, to the oaks of Gilead, and the cedars of Mount Lebanon, of which the palace was constructed. Lebanon was the highest mountain in Israel, and Gilead the richest and most fertile part of the country; and were, therefore, proper emblems of the reigning family. Though thou art the richest and most powerful, I, who raised thee up, can bring thee down and make thee a wilderness.