Komentaryong Sumisipi para sa Mga Awit 80:5

והנה תנור עשן ולפיד אשת, the word עשן is an adjective used in the same kind of meter as חכם סכל, which means חכם וסכל, "a wise man who acts foolishly." We would translate it here as "a smoking furnace." The point is that within the overall vision, Avram saw another furnace belching smoke, within the general atmosphere of intense darkness. This latter picture was an allusion to G'd's anger which coats Israel with its some during the long years of exile, the final exile which is the worst of them all. This is also what David had to say concerning this long and most difficult exile, when he exclaimed in Psalms 80,5 עד מתי עשנת בתפלת עמך, "for how long will You remain smoking angrily at the prayers of Your people?"