The "redemption of our body" refers to the resurrection of believers and the moral body putting on immortality. We will have in the future a body just like the body the resurrected Christ.
Christ's corruptible body just did not see corruption for those three days .I don't think it was changed in any other way other than not decaying.. When he left he instructed even though some did know him after the flesh like faithless Thomas . Today we know him no more forever more .God is not a man as us.
Wherefore henceforth know we no man after the flesh: yea, though we have known Christ after the flesh, yet now henceforth know we him no more. Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.2 Corinthians 5:16-17