Religions predating judaism
The Lord Carnarvon (1866-1923) has written: It has been claimed by some that Amenhetep IV was the first monotheist in Egypt, but the acceptance of this statement depends upon what meaning is given to the word monotheism, i.e., the doctrine of there being only one god.
The passages from the Moral Papyri quoted above show that the Egyptian priests and learned men were monotheistic, even though they do not proclaim the oneness of the god to whom they refer.
Thou didst create the world according to thy desire, Whilst thou wert alone: All men, cattle, and wild beasts (...) The lord of all of them, wearying (himself) with them, The lord of every land, rising for them, .
(However, it can be said that when Akhenaten mandated what was effectively monolatry, he was more concerned about the mundane power of the Amun priesthood than the alleged fakeness of the other gods.) 1 - although I don't necessarily agree with your conclusion, your answer is the only one that defines the terms of the discussion clearly and discreetly - something which the question failed utterly to do, thereby rendering it virtually unanswerable as written.(...) With the return of the Jews from Babylonia to Judaea, first under the leadership of Zerubbabel and Joshua and later under Ezra and Nehemiah, henotheism disappeared and monotheism took its place.While some scholars continue to adhere closely to the biblical story, in which the ancestors of Israel introduced a pure monotheism at the beginning of the nation's history, the dominant tendency nowadays is to presuppose a lengthy development in Israel's religion from an originally polytheistic or henotheistic to a monotheistic system by the time of the Babylonian Exile.Apparently, the Babylonian captivity was a turning point because it exposed the Hebrew intellectual elites to concepts which were developed in more Eastern areas, notably Zoroastrianism.Though Zoroastrianism gained the status of "state religion" in Persia only later on, the basic concepts were older (the exact date is highly disputed, but the current consensus points to "some time in the 2nd millenium BC").