Earthly Body vs Heavenly Body
The Apostles' Creed ends with, "I believe in the resurrection of the body and the life everlasting." 1 Corinthians 15 gives us a future hope and a present encouragement. Future hope: Jesus rose to a resurrected body so we will rise to a resurrected body.
Present encouragement: Jesus crucified our sin in his mortal body on the cross.