Catholic, every living creature has a soul, which is a behavior mechanism. What God gave humans is a spirit. Only humans descended from Adam gave a spirit.
The term 'the flesh', as in 'the spirit is willing butthe flesh is weak' is referring to the behavior mechanism of body and soul. Until one is born again, born from above, they have a spirit encrusted with sin due to being captured in the behavior mechanism inherited from Adam.
Once someone is born again, born from above, they have a spirit that GOD has separated from the behavior mechanism inherited from Adam.
Try seeing the spirit where you use the soul. Your Catholicism religion is fixated on the soul, the flesh. Your religion even has a huge myth of a purgatory where the flesh is purified through suffering (works anyone?) so it can go to Heaven. News flash: Jesus did not go to that cross to redeem your flesh, your behavior mechanism. He went to that cross to redeem the spirits we have inherited from Adam. And e has promised to one day, in the twinkling of an eye, give us a new body and new soul, fit for eternal life and functioning physically on a higher reality plane than we now occupy.