1 Corinthians 15:45,46 - Joseph Benson’s Commentary on the Old and New Testaments

And so it is written With respect to the animal body, Genesis 2:7. The first Adam was made a living soul God gave him animal life, in many respects resembling that of other animals; the last Adam was made Rather was, or is, for there is nothing in the original for made; a quickening Spirit Having life in himself, and quickening whom he will: imparting even a more refined life to men's bodies at the resurrection, than that which they formerly possessed. Christ is called Adam, because believers receive their sanctified, spiritual nature, and their immortal bodies, from him, (see Ephesians 5:32,) just as mankind have derived their corrupted nature and mortal bodies from the first Adam. He is also called the last Adam, because he is posterior in time to the first Adam, or because there shall be no restorer and head of the human race after him. Howbeit that was not first which is spiritual, &c. That is, as the first Adam existed before Christ was sent to assume our nature, and become our Saviour, so must we first wear that animal body, which we derive from the one, before we put on that spiritual body which we receive from the other. Here we are taught that the plan of the divine government is to lead his creatures from a lower to a higher state of perfection. They, therefore, who contend that things should be as perfect at the beginning as at the conclusion of his administration, are wiser than God.