It is not easy to grasp something totally new. We have to relate it to what we already know. The church in Corinth had that difficulty in understanding the resurrection, and the resurrection body. So Paul took time to explain. Many things we can see are not the same. Although we do not fully understand the differences, we accept them. He used the language of Genesis 1 in describing the different 'kinds' of living creatures: each with distinctive reproducible characteristics.
 
He then described the differences between the world, the planets and stars; not their physical characteristics but in terms of the colour and intensity of light they radiate, and the reaction of those who observe them. Paul used the word 'doxa' which we often translate as 'glory' [this translation uses 'splendour'], which speaks more to artists than scientists. He was pushing his readers to stop thinking that the resurrection body is basically the same as the weak and failing physical bodies we know. The resurrection body will be gloriously different and will always bring praise to God.
 
Using the seed analogy again (1 Corinthians 15:36-37), Paul described the mortal body as perishing, shameful, weak and natural – all moral characteristics of the effect of sin. By contrast the resurrection body will be imperishable, glorious, powerful and spiritual – all divine characteristics. It will be a massive transformation, we shall be radically changed (1 Corinthians 15:52). All the legacy of sin which clings to us, and is now expressed in and through our physical bodies, will be removed for ever.
 
We know the resurrection will happen because Jesus was raised. He intends the hope of resurrection to motivate us now. Satan's tactic is to tell us that everything is bad and can never change; that we are sinful and will never be any different. He wants to eliminate our confidence in Jesus and remove all hope about the future. Christ's resurrection declares that to be a lie. Our sin is forgiven; we are justified now. Our sin-tainted bodies which drag us down will be changed. The Lord is changing our hearts now: we are now being transformed into His likeness with ever increasing glory (2 Corinthians 3:18) as we allow Him to work in our lives. When Jesus comes again, our bodies will be totally transformed too. So be encouraged, do not let the world, flesh or devil squeeze you into its hopeless mould (Romans 12:2). The Lord is now at work to change you and He will complete what He has started (Philippians 1:6).