Amen, a.k.a. Amun and the Jewish God
The worship surrounding Amun, and later, Amun-Re represented one of ancient Egypt's most complex theologies. In his most mature form, Amun-Re became a hidden, secret god. In fact, his name (Imn), or at lest the name by which the ancient Egyptians called him, means "the hidden one" or "the secret one" (though there has been speculation that his name is derived from the Libyan word for water, aman. However, modern context seems to negate this possibility). In reality, however, and according to mythology, both his name and physical appearance were unknown, thus indicating his unknowable essence.
The ancient theology made Amun-Re the physical father of the king. Hence, the Pharaoh and Amun-Re enjoyed a symbiotic relationship, with the king deriving power from Amun-Re. In return, the king supported the temples and the worship of Amun. In theory, Amun-Re could even take the form of the king in order to impregnate the chief royal wife with the successor to the throne (first documented during the reign of Hatshepsut during the New Kingdom). Furthermore, according to official state theology during the New Kingdom, Egypt was actually ruled by Amun-Re through the pharaohs, with the god revealing his will through oracles.In reality, the god did in fact threaten the monarchy, for the cult of Amun-Re became so powerful that its priesthood grew very large and influential, and at one point, priests of the deity actually came to rule Egypt (during the 21st Dynasty). At other times, Amun-Re created difficulties for the king, such as in the case of Akhenaten, who sought to change the basic structure of Egyptian religion. In this instance, Amun-Re eventually proved more powerful then the king, for though Akhenaten desperately tried to change the nature of Egyptian religion, for such efforts he himself became the scorn of later pharaohs. After Akhenaten's reign, Egyptian religion almost immediately reverted back to its prior form and to the worship of Amun-Re." --by Taylor Ray Ellison
Amen of Egypt
"Of the attributes ascribed to Amen in the Ancient Empire nothing is known, but, if we accept the meaning "hidden" which is usually given to his name, we must conclude that he was the personification of the hidden and unknown creative power which was associated with the primeval abyss, gods in the creation of the world, and all that is in it. The word or root amen, certainly means "what is hidden," "what is not seen," "what cannot be seen," and the like, and this fact is proved by scores of examples which may be collected from texts of all periods. In hymns to Amen we often read that he is "hidden to his children, "and "hidden to gods and men," and it has been stated that these expressions only refer to the "hiding," i.e., "setting" of the sun each evening, and that they are only to be understood in a physical sense, and to mean nothing more than the disappearance of the god Amen from the sight of men at the close of day. Now, not only is the god himself said to be "hidden," but his name also is "hidden," and his form, or similitude, is said to be "unknown;" these statements show that "hidden," when applied to Amen, the great god, has reference to something more than the "sun which has disappeared below the horizon," and that it indicates the god who cannot be seen with the mortal eyes, and who is invisible, as well as inscrutable, to gods as well as men. In the times approaching the Ptolemaic period the name Amen appears to have been connected with the root men, "to abide, to be permanent;" and one of the attributes which were applied to him was that of eternal."
--From Budge's The Gods of Egypt