Some of the hymns and prayers addressed to certain deities read almost as if the authors were monotheists. But this is due simply to the fact that just at the time they are interested in the power or {169} splendor or favor of a specific deity. Again and again the fact that they believe in the existence of other deities, and in their duty to pay homage to different deities, crops out. At no period of the religious history of Babylonia is there any indication of a clear and well-defined monotheism. In Egypt also a tendency toward monotheism manifested itself, especially during the reign of Amenophis IV, soon after B.C. 1400,[10] that is, during the period when the Hebrews were in Egypt. He tried to do away with the worship of many deities and to establish as the one supreme deity the orb of the sun; but after the death of Amenophis, who was considered a heretic, the new cult disappeared without exerting any noticeable influence on Egyptian religion. There certainly is no evidence that either the Babylonian or the Egyptian monotheistic tendencies influenced in any direct way the development of Israel's religion. Turning now to the religion of the Old Testament, we soon discover that Hebrew religion, including the conception of Deity, passed through various stages of development, the earliest of these belonging to the period before Moses. The first thing to be noted about this period is that, in spite of the close relation of the ancient Hebrews with Babylon, the early Hebrew conception of Deity does not seem to have been influenced in any marked manner by that of Babylonia; nor {170} is there any indication of Egyptian influence. On the other hand, the oldest Hebrew conceptions show marked similarities with the religion of their nomadic neighbors, as reflected, for example, in the oldest traditions of the Arab tribes. This does not mean that an indirect influence may not have been exerted by Babylon; indeed, the absence of such influence would be very strange in view of the fact that, according to Hebrew tradition, the truth of which cannot be doubted, the ancestors of the Hebrews came from Babylonia, from the city of Ur, the principal center of the worship of the Babylonian moon-god, Sin.