One of the principles we must hold most firmly is this one: He is the firstborn from the dead (Colossians 1,18 - Revelation 1,5). That means that by following his faith and spiritual example, we will also be born from the dead.
When the risen Jesus met the disciples on the road of Emmaus, (Luke 24,23-35) they met someone who had a body. But although they have known him before, they do not recognize him. That is quite surprising but gives us clues about what is resurrection: Luke [but also Matthew (28,9) and John (20,27)] insists on the body of the resurrected, but indicates that "their eyes were prevented from recognizing him" (Luke 24,16) probably because as I said previously "no one" could imagine such a thing and also because Jesus body might have been glorified as says Philippians 3,21 (even if it kept visible signs of his personal history - see John 20,24-29; Luke 24,36-43).
So the resurrection of Jesus as testified by the Gospels and Paul shows that resurrection is not only a spiritual event, but also a bodily event.
And there is also something we should not forget as a teaching from the fact that Jesus rose from the dead: resurrection is not the cancellation of the death of Jesus. It is therefore the crucified who is alive. If the one who rises is someone who has died, it is because the risen one was already alive with eternal life before his death, as Jesus himself said to Martha (in John 11:25-26). The process of eternal life should not be seen as a chronology: we are born again before we die, and the resurrection will be the future manifestation of a state already present, an "already but not yet".