Mark probably dates from 66–70 AD.[4] It appears as the second New Testament gospel because it was traditionally thought to be an epitome (summary) of Matthew, but most scholars now regard it as the earliest written gospel.[5][6] Some also reject the tradition which ascribes it to John Mark, the companion of the apostle Peter, and regard it as the work of an unknown author working with various sources including collections of miracle stories, controversy stories, parables, and a passion narrative.[7]