"Behold, I am vile!" Job 40:4
"I know that nothing good lives in me, that is, in my sinful nature. For I have the desire to do what is good, but I cannot carry it out!" Romans 7:18
"For the sinful nature desires what is contrary to the Spirit, and the Spirit what is contrary to the sinful nature. They are in conflict with each other, so that you do not do what you want." Galatians 5:17
Though grace had entered Job's heart, his native depravity had not been expelled. Though sin no longer had dominion over him — it often raged and prevailed against him.
There is ceaseless warfare within between the flesh and the spirit. There is no need for us to enlarge on this, for every Christian, because of the plague of his heart, groans within himself, "Oh what a wretched man I am! Who will free me from this life that is dominated by sin and death!" Romans 7:24