But the question as to how the belief in the resurrection of Jesus originated is of less importance than the question as to how it should have produced the effect that it did. The dogma of the resurrection has, until recent times, been so rarely treated from the historical point of view, that the student of history at first finds some difficulty in thoroughly realizing its import to the minds of those who first proclaimed it. We cannot hope to understand it without bearing in mind the theories of the Jews and early Christians concerning the structure of the world and the cosmic location of departed souls. Since the time of Copernicus modern Christians no longer attempt to locate heaven and hell; they are conceived merely as mysterious places remote from the earth. The theological universe no longer corresponds to that which physical science presents for our contemplation. It was quite different with the Jew. His conception of the abode of Jehovah and the angels, and of departed souls, was exceedingly simple and definite. In the Jewish theory the universe is like a sort of three-story house. The flat earth rests upon the waters, and under the earth's surface is the land of graves, called Sheol, where after death the souls of all men go, the righteous as well as the wicked, for the Jew had not arrived at the doctrine of heaven and hell. The Hebrew Sheol corresponds strictly to the Greek Hades, before the notions of Elysium and Tartarus were added to it,--a land peopled with flitting shadows, suffering no torment, but experiencing no pleasure, like those whom Dante met in one of the upper circles of his Inferno. Sheol is the first story of the cosmic house; the earth is the second. Above the earth is the firmament or sky, which, according to the book of Genesis (chap. i. v. 6, Hebrew text), is a vast plate hammered out by the gods, and supports a great ocean like that upon which the earth rests. Rain is caused by the opening of little windows or trap-doors in the firmament, through which pours the water of this upper ocean. Upon this water rests the land of heaven, where Jehovah reigns, surrounded by hosts of angels. To this blessed land two only of the human race had ever been admitted,--Enoch and Elijah, the latter of whom had ascended in a chariot of fire, and was destined to return to earth as the herald and forerunner of the Messiah. Heaven forms the third story of the cosmic house. Between the firmament and the earth is the air, which is the habitation of evil demons ruled by Satan, the "prince of the powers of the air."