Islam has no cross and no resurrection, articles of the faith that are of the essence of Christianity and of ultimate importance to the plan of the God of the Bible. Mohammed made no atonement for our sins when he died. And when he died, he stayed dead. There are other crucial differences we could explore of how God is understood in orthodox Christianity and how He is understood in orthodox Islam. It is enough for now to say that Allah and Yahweh are not the same. One is the living God; the other is an idol.
A rose is a rose is a rose. This dictum reinforces the adage that a rose by any other name is still a rose. The idea is that the essence of the rose is not conditioned by what name is attached to it. It is its res, not its nomina, that determines what it is. In different languages, the same flower is known by different names, but it is still the same flower.
When we apply this idea to theology things get a bit more complicated. Indeed the rose adage has been transferred indiscriminately to religion in order to create a theological concept. The concept is: “God by any other name is still God.” Now certainly, it is true that the immutable essence of God is not changed by the alteration of His name. In English, we may say “God,” in German “Gott,” in Greek “Theos,” yet all these names or words are used to point to the same Deity.
Beyond this, however, things get murky. It is a quantum leap to go from saying that God by any other name is still God, to saying that all the great religions in the world believe in the same Being though they call Him different names.
This irrational leap is prodded by the popular analogy of the mountain. This analogy notes that their are many roads up the mountain. Some progress on a more direct route, while others wind about on more circuitous roads, but sooner or later they all arrive at the same place, at the top of the mountain.
Do all roads lead to God?
So, it is argued, there are many roads that lead to God. They may be different routes but they all end up in the same place—with God Himself. That is, the differing roads indicate no difference in the God who is found. God’s being, then, becomes the lowest (or highest) common denominator of all religions.
The road analogy is buttressed by the democratic truism that all religions are equal under the law. The fallacy in this axiom is thinking that just because all religions enjoy equal tolerance under the civil law, they therefore are all equally valid. That might be true if there were no God, but then it would be better to say that with respect to their ultimate affirmation they are all equally invalid.
To argue that all religions ultimately believe in the same God is the quintessential nonsense statement. Even a cursory examination of the content of different religions reveals this. The nature of the Canaanite deity Baal differs sharply from the nature of the biblical God. They are not remotely the same. This sharp distinction is also seen when comparing the God of Israel with the gods and goddesses of Roman, Greek, or Norse mythology.