Christians of Mark's time expected Jesus to return as Messiah in their own lifetimeMark, like the other gospels, attributes the promise to Jesus himself (Mark 9:1 and 13:30), and it is reflected in the letters of Paul, in the epistle of James, in Hebrews, and in Revelation. When return failed, the early Christians revised their understanding. Some acknowledged that the Second Coming had been delayed, but still expected it; others redefined the focus of the promise, the Gospel of John, for example, speaking of "eternal life" as something available in the present; while still others concluded that Jesus would not return at all (2 Peter argues against those who held this view).