The Ascension of Jesus is the Christian teaching found in the New Testament when the resurrected Jesus was taken up to heaven in his resurrected body, The Ascension of Jesus is professed in the Nicene Creed and in the Apostles' Creed. The Ascension implies Jesus' humanity being taken into heaven. The familiar account of Jesus ascending bodily into the clouds is given fully only in the Acts of the Apostles, but is briefly described also in the Gospel of Luke (often considered to be by the same author) at 24:50–53 and in the ending of Mark 16 at 16:19
In Eastern Orthodox and Oriental Orthodox theology, the Ascension is interpreted as the culmination of the Mystery of the Incarnation, in that it not only marked the completion of Jesus' physical presence among his apostles, but consummated the union of God and man when Jesus ascended in his glorified human body to sit at the right hand of God the Father. The Ascension and the Transfiguration both figure prominently in the Orthodox doctrine of theosis. The bodily Ascension into heaven is also understood as the final token of Christ's two natures: divine and human.
In his homily for Ascension, Deacon Greg notes that:
"It is tempting on this feast of the Ascension to experience it the way the apostles did, to gaze into the heavens and to ponder the clouds and to pray over the miracle of this great moment.But Christ’s words to his apostles are words to us all. ‘Go.’ The world will not be converted on a mountaintop. The message will not be spread in the clouds. It will happen in the streets and the synagogues, in public squares and private homes, in books and newspapers and media of all kinds. It needs to be lived in the world"
- Pat Gohn makes the point that if the Gospels are the original words and deeds of Jesus, the Ascension sets the stage for the sequel -- "The Last Days" -- until the Second Coming. Ascension: Cue the sequel.
- Fr Robert Barron's Word on Fire