

It is a matter of church-speak. Start with
CCC, 364, “the human body is animated by a spiritual soul”.
CCC, 365 repeats this in more difficult language – at least it was to me at the beginning. Back then, I had a “dualism” concept of soul and body. A CAF poster nailed me for that. Praise God!
CCC, 366, says what you were saying about God creating the soul. These three paragraphs explain our own human nature and they explain Adam’s human nature. Just as our body (matter at conception) needs God’s direct action of
creating a soul for us, so also did Adam’s body (matter) need God’s action of creating an individual soul. (Genesis 1:27) Adam and ourselves are similar in our human nature with the exception that in Adam was all humankind “as one body in one man.” (
CCC, 404)
CCC, 363 says “soul” signifies the spiritual principle in man. That refers back to the idea that in our own nature, there is an unique unification of both the spiritual and material worlds. This is not two natures, soul united to the body, but rather we have one single nature formed by the unification.
While we think of Adam being superhuman, both Adam and ourselves have the same need to seek union with our Creator. (
CCC, 1730)
My suggestion is to take time to really wrap your brain around human nature. I know I needed time. Then, we can deal with our soul being stained. As a child, I could not imagine a stained soul and I still can’t imagine it even though it is an acceptable description. I personally prefer that we contracted the state of original sin. Makes me feel grown up. (
CCC, 404-405)