He probably gleamed it from the first 18 centuries of Christian beliefs, scholars, and writers like I did. The modern thinking on the book of Revelation came from John Darby around 1825 - 1830. It was regarded as heresy by the church. Funny how things get turned around.
If you both (Muslim & Christian) gleamed it from the first 18 centuries of Christian beliefs, scholars, and writers maybe you both would have been blessed if you had trusted only the written Word of God instead of the word of man?
The Word of God is a joy and a lamppost never changing!
A humanistic view of the Bible only leads to confusion.