The resurrection of Jesus is the basis of our faith in the resurrection of our bodies. Often we hear the suggestion that our bodies are the prisons of our souls and that the spiritual life is the way out of these prisons. But by our faith in the resurrection of the body we proclaim that the spiritual life and the life in the body cannot be separated. Our bodies, as Paul says, are temples of the Holy Spirit (see 1 Corinthians 6:19) and, therefore, sacred. The resurrection of the body means that what we have lived in the body will not go to waste but will be lifted in our eternal life with God. As Christ bears the marks of his suffering in his risen body, our bodies in the resurrection will bear the marks of our suffering. Our wounds will become signs of glory in the resurrection.
But about the resurrection of the dead -- have you not read what God said to you, "I am the God of Abraham, the God of Isaac, and the God of Jacob"? He is not the God of the dead but of the living. When the crowds heard this, they were astonished at his teaching. - Matthew 22: 31-33 (NIV)