As later generations meditated on the perils of the wilderness through which their ancestors passed, they naturally felt that only under the immediate guidance of a divine power could they have escaped. They were familiar with the way in which the caravans travel through the desert: in front of the leader is borne aloft a brazier filled with coals. From this smouldering fire there arises by day a column of smoke that, in the clear air of the desert, can be easily seen afar by any who may straggle behind. At night these glowing coals seem like a pillar of fire, telling of the presence of their leader and protector. With the same vivid imagery, according to some interpreters, the later Hebrews pictured the march of their ancestors through the wilderness, and thereby symbolized the belief that Jehovah was then present and that through his prophet Moses he was personally guiding his people. How far have these Old Testament narratives been thus interpreted by modern western readers? Does it change their spiritual significance to seek to learn their origin and real literary character? Are there still to be found, often in humble walks of life, earnest Christians who have similar deep spiritual experiences and describe them with the same vivid imagery and concreteness? Is the value of our conception of God's presence and activity in human history deepened and strengthened or lessened by the thought that in the past, even as to-day, he accomplished his ends by natural rather than contra-natural methods? Are the faith and institutions of nations and individuals developed most through special revelations or through ordinary, constant, daily training and experience? Is it not true that to us all there come at times experiences akin to those that underlie these wonderful narratives? IV. THE SIGNIFICANCE OF THE EAST-JORDAN CONQUESTS. Desert dwellers take little account of the lapse of time. It is not strange that the data regarding the duration of the sojourn in the wilderness are late and exceedingly vague. The number forty in the Bible is the concrete Hebrew equivalent of many. Ordinarily the forty years represent a generation. A period of about forty years accords well with the facts of contemporary Egyptian chronology. If the Hebrews fled from Egypt about 1200, during the period of anarchy following the breakdown of the nineteenth Egyptian dynasty, they could not have entered Palestine much before the middle of the twelfth century, for Ramses III of the Twentieth Dynasty succeeded in re-establishing and maintaining his authority in Southern Palestine until his death about 1167 B.C.