III. Problems and Hopes of the Judean Community. Four or five practical problems confronted and disturbed the temple-builders. The first was: Would Jerusalem and the temple, still without walls, be protected from the attack of the hostile foes that encircled them. A second and larger question was: What was to be the outcome of the great tempest through which the Persian Empire was passing, and did it mean for the Jews deliverance from the powerful conquerors who for centuries had oppressed and crushed them? The third was: Would the necessarily modest service of the restored temple, already sadly polluted by heathen hands, be acceptable to Jehovah? Another problem was: What were the relations and the respective duties of Zerubbabel and Joshua, the civil and religious authorities in the community? It was also inevitable that at this time the hope of securing their independence under the leadership of Zerubbabel should come prominently to the front. To each of these problems Zechariah addressed himself, and his book records his convictions and public utterances. IV. Zechariah's Assurances of Jehovah's Care. In his initial vision concerning the angelic horsemen he recognizes that the storms that have swept over the Persian Empire are beginning to subside, but he tells his fellow-laborers that, if they persist, Jehovah's temple shall be rebuilt and that the lands about Jerusalem shall again be sold to eager buyers, and the cities of Judah shall enjoy their former prosperity, for "Jehovah will surely comfort Zion." In the vision of the four horns and of the four smiths whose mission it is to smite the horns, he assures the people that Jehovah in his good time and way will overthrow the nations that now wrong and oppress them. Although there is no promise that Jerusalem will be surrounded by walls, he declares that it shall enjoy a prosperity and a growth which no walls can confine, and that Jehovah himself will be its protection, as well as its glory, that he will gather the scattered exiles, and that they, together with the nations which shall acknowledge Jehovah's rule, shall yet come streaming back to Judah. In his next vision the prophet graphically presents a scene in Jehovah's court. Joshua the priest, representing the ceremonial service of the polluted temple, is charged by the adversary with uncleanness. Here for the first time in Hebrew literature we catch a glimpse of Satan, who is regarded not as hostile to God but as the prosecuting attorney of heaven. As in the prologue of the book of Job, he is an accredited member of the divine hierarchy. His task is to search out and report to Jehovah the misdeeds of men. In Zechariah's vision, however, the divine judge acquits Joshua of the charge, and causes him to be clad with clean garments, thus proclaiming the divine approval of the modest yet devoted service of the Judean community.