This argument has so many holes and deficiencies, we're really baffled from where to start dissecting it. The best way to answer the question is by asking the below set of questions:

Who is Jew? This question happens to be the most divisive question in the Jewish Community.

Is being a Jew implies belonging to a race? Like the Indian, Arab, Turkish, ... etc. races.

Can any person become a Jew? Are you aware that becoming Jewish is not as easy as becoming Muslim, Christian, or Buddhist. The process of becoming Jewish is a bureaucratic process that requires extensive rabbinic supervision.

If a billion people convert to Judaism, does the Right of Return law (Israeli law that automatically grants Israeli citizenship solely based on someone's faith) applies to these new converts?

Let us ask the above question the other way around, how about if all Jews convert to other religions, are they still considered Jews? After all, if Hans Herzl, Theodor Herzl's son, could convert to Christianity, it is also possible that other Jews do the same. (One Palestine Complete, p. 302)
How about the Semitic Jews who converted to other religions, are they still descendents of Abraham? It is worth noting that many Jewish tribes in Arabia, Yemen, Palestine, and Iraq converted to Christianity and Islam. Could they become Israeli citizens based on DNA testing despite their conversion to other religions?

If all Palestinians do a mass conversion to Judaism, do you think that would put an end to the conflict? or Do you think the Israeli government will be forced to refine its definition of WHO IS A JEW?

Let us assume that the majority of the Israeli Jews emigrate to other countries (believe us it's not easy to be an Israeli), and its citizens voluntary change its laws, do you still believe that Israel is a prophecy? According to Ha'aretz (major Israeli newspaper) report published in March 2001, half of the Russian Jews, who immigrated to Israel in the 1990s, belong to mothers who recently converted to Judaism,
do you believe that these people are connected to Eretz Yisrael through the Biblical prophecy?

Does the Israeli Right of Return law applies to the ATHEIST JEWS who inherited Judaism from their mothers? If you answer yes, how come the Right of Return law does not apply to Jews who converted to other religions? Are you aware that Jews who convert to other religions would not be able to gain automatic citizenship based on the Israeli Right of Return Law?

The first city to be turned over to the Palestinian National Authority (P.N.A.) was Jericho in the West Bank, however, Jericho was the FIRST city to be conquered by the Israelites during their conquest of Palestine in Biblical times, do you see that part of the Biblical prophecy too?

Finally, the exact borders of the "Promised Land" has not been geographically defined. The Biblical "Promise", which was given by Abraham to his descendents, bordered the areas between the Nile River in Egypt and the Euphrates River in Iraq,
Does that imply that Israel's future borders eventually will span the borders of Jordan, Syria, Lebanon, Egypt, and Southern Turkey?
Could that justify why Israel has neither a constitution nor a properly defined borders? Having such vast borders, does that imply a Biblical prophecy too?
Could that justify why Israel has invaded and occupied neighboring states?
Since the "Promise Land" includes southern Lebanon, was invading and occupying Lebanon part of this prophecy? If invading Lebanon was a fulfillment of this ancient Biblical prophecy, then was it a prophecy, or non-prophecy, to withdraw out of Lebanon?
Click here to get an idea how the ancient "BIBLICAL MAP" was central to the evolution of Zionism and Israel's policies in the Middle East.
There is no question that some of present day Jews are definitely descendents of the prophet Isaac and the prophet Abraham. However, to claim that other people, including Palestinian Muslims and Christians, are not descendents of Isaac is a FALSE CLAIM. Either through voluntary or involuntary conversion, the MAJORITY of the Semitic Jews had converted overtime to other religions, such as Christianity and Islam.

The CORE of Israel's future problems lies in its CRIPPLED democracy (since it empowers people based on their faith), and for it to survive, Israel has to continuously REFINE its definition of "who is a Jew." Its current definition of "who is Jew" is LIQUID FLUID, since it has been written to suite its domestic political agenda. Such RACIST and CRIPPLED "Jewish Democracy" will not last, so if you enjoy Israel's current status, then enjoy it while it lasts. Any civilization that bases itself on exclusion, rather than inclusion, sooner or later it will self-destruct, and that is our PROPHECY.

The mostly HIDDEN AND FORBIDDEN history of Khazaria and its roots in European Jewry is purposely UNDER DOCUMENTED, for obvious political reasons, in many Jewish communities. We find it really SHOCKING that the best selling book about Jewish History devoted only few lines about the great Khazarian Empire.

Finally, let us assume that it is a TRUE FACT that the prophet Abraham made such a "PROMISE" to his descendents (regardless if these descendents are Jews, Arabs, or even non-Semitic), then it MUST be a racist PROMISE since it was based on the GENETIC make up of his heirs, the question which begs itself:

Will you accept a RACIST PROPHECY because the Holy Bible said so?