I DO not see any difficulty in 1 Cor. 15:47-49. Ek is the source, hence characterizes a thing in its nature. Ek pneumatos, e.g., so ex ouranou. One man is earthy dust, the other of heaven. It is not apo merely, that he come thence.
Then v. 48. As we are all what fallen Adam so our place, as in Christ, is to be just what Christ is. And as we have carried this in manifestation as Adam', children, so we shall be manifested just such as Christ Himself, as man. It is the source, and so character, nature, and constituted condition, and, then, manifested form. Of course, we have to realize it now we are in Christ, sitting in heavenly places in Him: as He is, so are we also, in this world. This characterizes a class of Christians, the “perfect “as contrasted with forgiven children of Adam. But the state of the affections is not the subject here (1 Cor. 15) but to be in glory like Christ acts on them now and here.