Romans 7:21-23

So I find it to be the law [of my inner self], that evil is present in me, the one who wants to do good. For I joyfully delight in the law of God in my inner self [with my new nature], [Ps 1:2] but I see a different law and rule of action in the members of my body [in its appetites and desires], waging war against the law of my mind and subduing me and making me a prisoner of the law of sin which is within my members.