The first account of the Ascension found in the Christian Bible in the Gospel of Mark. Jesus and the remaining eleven Disciples are seated at a table, presumably in a room in or near Jerusalem. Jesus commands his followers to spread the Gospel, and that those who believe will be known by their invulnerability to poison, ability to heal the sick, and the like. After delivering these final words, Jesus is received into Heaven to sit at the right hand of God. No description of the Ascension itself is given; Mark simply states the fact that it happened.
In both Mark and Luke, the Ascension takes place immediately after the Resurrection of Jesus (16:14-19).