Ms. Drake:
Your ostensibly peace-making proposal is flawed in almost every factual detail.
1. But if “enough people” (whatever that number must be) embraced the three religions’ COMBINED revelations about God and the Messiah He promised to send us…
But I have already argued that Islam, at least, is fundamentally different from Judaism and Christianity, even if we assume (which is not self-evident) that the Jewish and Christian revelations are identical.
Furthermore, the revelations about the “Messiah” this “God..promised to send…” are fundamentally different. The Christian Messiah is a crucified Messiah. This is one of the basic reasons the Jews rejected Jesus’ messianic claim. Messiahs were to conquer the enemies of the Jews, not be crucified by them. Islam claims to recognize Jesus as the Messiah, but denies he was crucified. So the Muslim Messiah is simply not the Christian Messiah.
2. …members of all three religions would each have to alter some portion of their own manmade beliefs… But who decides that? You give your own highly idiosyncratic version of each of the traditions–they look man (? woman-) made to me.
3. …each embraces their own clergy’s interpretations of their own Sacred Book – interpretations that have provoked hatreds and wars throughout their shared religious history.
In the first place neither Jews nor Muslims have clergy. Rabbis (ulama for Muslims) are not priests or clergy; they have no supernatural power. They are simply scholars of religious law (halakhah for Jews, and shariah for Muslims).
In the second place, Jewish and Christians leaders attempted to ameliorate the use of violence.
There are bloodthirsty texts in the Tanak (see especially the Psalms); the rabbis chose to abandon the quest for worldly power and seek their G-d within their halakhic and liturgical life.
The medieval Christian leaders tried to temper the endemic violence of the converted warriors–look up the “Peace of God” and “Truce of God”.
I’ll let others deal with the Muslim case.
4. Jews need to recognize the world’s Messiah, rejected by their presumptuous clergy…,
It was not presumptuous for the Jews to reject Jesus as the Messiah. He simply did not fit their historic “job description.”
5. And Christians need to recognize Abraham’s One and Only unseen God, Who, throughout the Hebrew Scriptures which introduced Him to the world, never inferred He was one of three gods, as Christianity’s brazen clergy identified Him.
The “one and only unseen God” is a late development within the “Hebrew Scriptures” (Tanak). Abraham was most certainly not a monotheist.
Even the Ten Commandments begins, not with monotheism, but with a variant of “henotheism.” The God of the Hebrews was one deity, but it recognized others deities existed: “I am the L-RD [the sacred name] your G-d [Elohim: lit., "deities", a plural word], you shall have no other g-ds [Elohim] before me.”
If we take the Tanak at face value, monotheism is not known until about 500 BCE (read Jeremiah 10 and Isaiah 44).
So monotheism is not taught “throughout the Hebrew Scriptures,” but is in fact a late development in the Jewish tradition.
Christianity does not claim “three gods,” professes 3 “faces” or “masks” [Latin persona] within a divine unity.
This claim is based on the experienced reality of the divine power of Jesus Christ. So J.C. must be God. That Christian claim is just as valid as is the Jewish or Muslim.
