This is not the first time counterfeit Bible writings have been claimed to reveal new things.
The Dead Sea scrolls were a similar fetish that were played with for a good number of years, only to be proven to be pulp trash copies by a copy group with no ethics of moral commitment.
So, Allah's friends will push this, and millions of Muslims will be assured that this Barnabas was a real close pal of Jesus and knew the real truth.
READ ABOUT IT HERE
Adding to the Bible is an offense with God which brings serious consequences. This alleged gospel was written after the Apostle John received the following revelation on the island of Patmos. All scriptures added after that are damnable, including the Book of Mormon, the Koran, Pearl of Great Price, Science and Health with Keys to the Scripture, the New International Version, many recent revisionist bibes, your favorite preacher's latest revelation, etc, etc, ad nauseam.
Revelation 22:18 For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book:
19 And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book.
The new toy with Muhammed in it is simply part of the ongoing effort to discredit the King James Bible and the Textus Receptus of the Greek New Testament.