Catechism of the Catholic Church
645 By means of touch and the sharing of a meal, the risen Jesus establishes direct contact with his disciples. He invites them in this way to recognize that he is not a ghost and above all to verify that the risen body in which he appears to them is the same body that had been tortured and crucified, for it still bears the traces of his Passion. 508 Yet at the same time this authentic, real body possesses the new properties of a glorious body: not limited by space and time but able to be present how and when he wills; for Christ's humanity can no longer be confined to earth, and belongs henceforth only to the Father's divine realm. 509 For this reason too the risen Jesus enjoys the sovereign freedom of appearing as he wishes: in the guise of a gardener or in other forms familiar to his disciples, precisely to awaken their faith. 510
646 Christ's Resurrection was not a return to earthly life, as was the case with the raisings from the dead that he had performed before Easter: Jairus' daughter, the young man of Naim, Lazarus. These actions were miraculous events, but the persons miraculously raised returned by Jesus' power to ordinary earthly life. At some particular moment they would die again. Christ's Resurrection is essentially different. In his risen body he passes from the state of death to another life beyond time and space. At Jesus' Resurrection his body is filled with the power of the Holy Spirit: he shares the divine life in his glorious state, so that St. Paul can say that Christ is "the man of heaven". 511
English Translation of the Cathechism of the Catholic Church for the United States of America © 1997, United States Catholic Conference, Inc.