I can't argue with that, but one's faith is not in the manner (custom) of worship but in the substance of worship. Which is why the Church has theology and catechism, so that everyone around the world believes in the same thing regardless of how they worship or what language they worship in. You will not find any difference in the theology of any Orthodox Church or of the Catholic Church Churches in communion with Rome.
Judaism and Protestantism don't have a magisterium to ensure uniformity of belief. Judaism and Protestantism pretty much share the idea that each man is his own "pope." Ask any Jew what he or she believes about afterlife and you will probably get as many different answers as the number of people you ask. Ask a Protestant what is meant by "rewards" in heaven and you will get the same variety.
So, there is no universality let alone objectivity when it comes to subjective beliefs that require axiomatic, a priori acceptance of things "unseen."
The only way to ensure that the One True G-d is to be worshiped is to have Him worshiped explicitly as the Jewish G-d
I can see that being an axiomatic truth for the Jews, but how does that apply to the Gentiles? It requires conviction that the God of Israel is the one true God. Based on what? A book written by the Jews, for the Jews and about the Jews?
The True G-d will be acknowledged by what amounts to Jewish spiritual conquest of the world
Which is is precisely why the Evangelicals aggressively proselytize and why the Muslims believe that the whole world should be Muslim. The idea is the same, Jews, Christians and Muslims all claim to believe in the same God of Abraham, except that their idea of how this God of theirs will be acknowledged as the "True God" differs.
The Jews believe the meshiyah will demonstrate the power of the Hebrew God by defeating all Jewish enemies (victories were always attributed to God's favor). Which hardly constitutes a "spiritual" conquest.
The Evangelical Christians believe it is their duty to preach and win people over with promises of salvation and rewards in heaven, and the Muslims simply believe that God of Abraham left it to them to bring the world to believe in him either through willing conversion and by eliminating those who believe in a different God.
Much of the Muslim way of thinking is in line with the Jewish scripture's prescribed treatment of nations that worship idols. So, you can't say the Muzzies reinvented the wheel. They are just doing what God directed the Israelites to do with those pesky Canaanites and anyone like them.
Thus, the "people of the Book" (Jews and Christians) can be spared until they accept Islam, but others have to be converted or die.
Now that we have almost 3 billion Christians, and 1.2 billion Muslims, we can safely say that the Jewish "spiritual conquest" is about half way there...for what it's worth.
Nope. "Conquest" meaning giving up all other religions whatsoever and observing only the Noachide Laws--a spiritual "colony," if you will.