1 Corinthians 15:46

“Howbeit, that was not first which is spiritual, etc.] As the apostle before proves the distinction of a natural and spiritual body, and gives instances of both in the two principal men in the world, the first and the last; and points out the difference between them, the one being animated, and having life given unto it, the other animating, and giving life to others; proceeds to observe the order of these, how that one was before the other; the spiritual body, though the more perfect and most excellent, yet was not first in being: but that which is natural; Adam’s animal body was before Christ’s spiritual body: and afterwards that which is spiritual; yea, even Christ’s animal, or natural…”

“afterward--Adam had a soul not necessarily mortal, as it afterwards became by sin, but "a living soul," and destined to live for ever, if he had eaten of the tree of life (Gen 3:22); still his body was but an animal-souled body, not a spiritual body, such as believers shall have; much less was he a "life-giving spirit," as Christ. His soul had the germ of the Spirit, rather than the fulness of it, such as man shall have when restored "body, soul, and spirit," by the second Adam (Th1 5:23). As the first and lower Adam came before the second and heavenly Adam, so the animal-souled body comes first, and must die before it be changed into the spiritual body (that is, that in which the Spirit…”

“Howbeit - There is a due order observed, 1 Corinthians 15:23. The decaying, the dying, the weak, the corruptible, in the proper order of events, was first. This order was necessary, and this is observed everywhere. It is seen in the grain that dies in the ground, and in the resurrection of man. The imperfect is succeeded by the perfect; the impure by the pure; the vile and degraded by the precious and the glorious. The idea is, that there is a tendency toward perfection, and that God observes the proper order by which that which is most glorious shall be secured. It was not his plan that all things in the beginning should be perfect; but that perfection should be the work of time, and should…”

“that which is natural: Rom 6:6; Eph 4:22-24; Col 3:9, Col 3:10 1 Corinthians 15:47”