Some pretribulation proponents, such as Grant Jeffrey, maintain that the earliest known extra-Biblical reference to the pretribulation rapture is from a 7th-century tract known as the Apocalypse of Pseudo-Ephraem the Syrian. Different authors have proposed several different versions of the Ephraem text as authentic and there are differing opinions as to whether it supports belief in a pretribulation rapture. One version of the text reads, "For all the saints and Elect of God are gathered, prior to the tribulation that is to come, and are taken to the Lord lest they see the confusion that is to overwhelm the world because of our sins." In addition, "The Apocalypse of Elijah" and "The History of Brother Dolcino" both state that believers will be removed prior to the Tribulation.