The fact of death is woven into this fallen creation. The fact of resurrection is woven into the new creation. We are to live in the old order, as heirs of the new. We cannot do this by sight, and so we are summoned to walk by faith.
Look at your hands. You know that at some future point, those same hands will have no flesh on them, and will simply be bone. You do not need to be persuaded of this; no proofs need to be undertaken. It is a given. No matter how young, or how old, all of us here will return in some fashion to the dust that Adam was made from.
But we are descended also from another Adam, one who committed no sin, a man who never turned aside from what God gave Him to do. And one of the tasks that God assigned to Him was the securing of our resurrection in glory. In this mission, our Lord Jesus was successful.
So look at your hands again. Just as Thomas was invited to look at the hands of Jesus Christ, and to identify them as the same hands that had received the nails just days before, so you are invited—no, more than that—you are commanded to believe that those same bones that shape your hands will be reconstituted, and flesh will surround them again. But this time, your body will not be a natural body, dominated by the soul, but rather a body dominated and controlled by the spirit. It will be no less tangible; rather, like the resurrection body of Jesus, it will certainly be made of very solid matter.
We think that Jesus went through walls because the resurrection made Him ghostly. It is more likely that He went through them because the walls were ghostly, timbers and plaster of smoke. The wonder was not that the disciples saw Him; the wonder was that He could see them. Because of the resurrection, all of us here are heirs of a complete and dense reality. We will inherit life. Let us worship as heirs of that life.