Summary: Ephesians 4 tells us that Christianity is exclusive in that it worships an exclusive God. Understand that there is only one true God, Who wrote only one book, has only one begotten Son, and only one plan of salvation.
The Exclusiveness of God
There has been a trend in America today to have churches become all-inclusive and embrace or incorporate the teachings of other faiths into Christianity. One such movement is Chrislam which seeks to build on a statement of Malcolm X when he said, "We are brothers; we are a family of God. Not one of us is better than the other in His eyes. He loves us both. The future can only be won against the "Evil one" by all of us standing strong together." On June 26th, churches from nine different denominations including Baptist joined with Muslims and Jews conducting inter-faith worship services which included reading from the Quran, the Bible, and the Torah. They seek to tell you that there are many avenues to God. They desire a potpourri faith. Ephesians 4 (quickview)  tells us that Christianity is exclusive in that it worships an exclusive God. Understand that there is only one true God, Who wrote only one book, has only one begotten Son, and only one plan of salvation.
I. There is only one true God
C. There are those who advocate that Christians, Muslims, or any other religion pray to and worship the same God. But understand that isn’t so.
D. Allah is NOT God.
1. Allah is seen as the Author of Evil – Evil is abhorrent to God
a. Allah called a schemer and deceiver in the Koran Surah 3:54 and Surah 4:142
2. God hates sin and cannot sin
3. Allah is not seen as a personal god.
a. Of the 99 names for Allah in Islam not one is “Father” or has a personal connotation.
4. God is the Father of every born-again believer
E. There is only one God
2. The Father is God; Jesus Is God; the Holy Spirit is God.
3. Within the one Being or essence of God, there eternally exists three distinct yet equal Persons, God the Father, God the Son, and God the Holy Spirit.
II. God wrote only one Book
A. There are a myriad of religious writings – the Veda, Quran, Book of Mormon, the writings of Ellen G White, are a few. But none of them compare to the infallible, inerrant, inspired, holy Word of God, the Bible. The Bible is unique among “Holy Books”. The Bible is the written revelation o f God to man.