1 Corinthians 15:42

So also is the resurrection of the dead. It is sown in corruption; it is raised in incorruption: it is sown in dishonor; it is raised in glory: it is sown in weakness; it is raised in power: it is sown a natural body; it is raised a spiritual body. If there is a natural body, there is also a spiritual body.

Incorruptible, glorious, powerful and spiritual shall be the new body given in the resurrection; and these qualities of it are contrasted with the corruption, dishonor and weakness of the natural body at the moment of its being "sown', in death. Paul does not say here that there is any "maybe" connected with this teaching; this reveals what is to be; and the certainty of the spiritual body's arrival at the due time in the unfolding of the Father's will is attested and prophesied by the very existence of the natural physical body itself. "If there is a natural body, there is also a spiritual body!" People may disbelieve it if they please, but that unbelief will neither prevent nor delay the fulfillment of God's will, having no consequence at all, except in the effect it shall have upon the destiny of them that disbelieve.