Biologists will tell you that the body you have now is not the body you had 3 months ago, or last year, or 10 years ago. Cells and organs and even your skeletal structure are constantly renewing and replacing themselves. Yet, the skin cells on your body, though completely new, may reflect a faded image of a surgery you had 10 years ago. We are continually transforming our bodies. We all have a spiritual self and a material self. In referring to his life, Jesus said, "No man taketh it from me, but I lay it down of myself. I have power to lay it down and I have power to take it up again". Of course, the left brained Pharisees thought he was insane. Because of his "connected consciousness", Jesus claimed the power to enter and leave his material body. This is not so strange as it might seem and has been demonstrated by many "spiritual adepts" or Yogis in India. Was the body Jesus appeared in the same one that he was crucified in? It depends on how you view matters. Jesus was probably able to do in a couple of days that which we take months and years to do, namely transform or renew our flesh bodies.