Charles Spurgeon Commentary 1 Corinthians 15:45-48

"So also it is written, The first man Adam became a living soul. The last Adam [became] a life-giving spirit. Howbeit that is not first which is spiritual, but that which is natural; then that which is spiritual. The first man is of the earth, earthy: the second man is of heaven. As is the earthy, such are they also that are earthy: and as is the heavenly, such are they also that are heavenly." — 1 Corinthians 15:45-48 (ASV)

And so it is written, The first man Adam was made a living soul; the last Adam was made a quickening spirit. However, that was not first which is spiritual, but that which is natural, and afterward that which is spiritual. The first man is of the earth, earthy: the second man is the Lord from heaven. As is the earthy, such are they also that are earthy:

You and I have every evidence about us that we are earthy.