The term apocryphal, before being vulgarized in the sense of "fabulous, supposed or feigned," indicated the word "hidden", "secret". The apocryphal books were those destined to a sectarian public, to the adepts, who filtered the message through science and doctrine. In that vein, the Apocalypse explores its most licit and propitious terrain: Apokalypsis means "not hidden", "revelation", thought of facts unveiled by virtue of a free pact between heaven and seer. The Christian apocalyptic, which develops models and forms of Jewish eschatological literature, conceived, in the first centuries of the common era, a series of stories that open the curtain between time and cosmos, present and future, flesh and eternal life. From the year 100, a Greek text circulates, the Apocalypse of Peter, first description of the torments and the torments in the Christian beyond.