Christian mythology
The Second Coming of Christ holds a central place in Christian mythology. The Second Coming is the return of Christ to earth during the period of transformation preceding the end of this world and the establishment of the Kingdom of Heaven on earth. According to Matthew's gospel, when Jesus is on trial before the Roman and Jewish authorities, he claims, "In the future you will see the Son of Man sitting at the right hand of the Mighty One and coming on the clouds of heaven."
The legend of the "Wandering Jew" concerns a Jew who taunted Jesus on the way to the Crucifixion and was then cursed to walk the earth until the Second Coming.
Advent
The theme of readings and teachings during Advent is often the preparation for the Second Coming, while also commemorating the First Coming of Christ at Christmas. The first clear references in the Western Church to Advent occur in the Gelasian Sacramentary, which provides Advent Collects, Epistles, and Gospels for the five Sundays preceding Christmas and for the corresponding Wednesdays and Fridays. While the Sunday readings relate to the first coming of Jesus Christ as saviour as well as to his Second Coming as judge, traditions vary in the relative importance of penitence and expectation during the weeks in Advent.