Jeremiah 21:14 - Ellicott's Commentary On The Whole Bible

I will kindle a fire in the forest thereof. — The “forest” thus referred to may be either literally the woods, then covering a larger surface than in later times, at Kirjath-jearim (Psalms 132:6; 1 Samuel 7:2), or the wood of the lone wilderness of Ziph (1 Samuel 23:15), or the valley of Rephaim (2 Samuel 5:22), or, figuratively, the royal palace, which, from its cedar columns (1 Kings 7:2; 1 Kings 10:21), was known as “the house of the forest of Lebanon.” (Comp. the comparison of the king’s house to “Gilead and the head of Lebanon,” in Jeremiah 22:6.) The desolation wrought by an invading army such as that of Nebuchadnezzar, cutting down the “choice fir-trees of Lebanon and the forest of Carmel” (2 Kings 19:23), showed itself in this destruction of forests in its most conspicuous form, and explains the comparative scarcity of trees in modern Palestine. So Assur-nasirpal narrates, in the history of his conquests, how he had cut down the pine, box, cypress, and other trees of the forest (Records of the Past, iii. p. 74).