Romans 7:14-18

For we know that the law is spiritual: but I am carnal, sold under sin.

For that which I do I allow not: for what I would, that do I not; but what I hate, that do I.

If then I do that which I would not, I consent unto the law that it is good.

Now then it is no more I that do it, but sin that dwelleth in me.

For I know that in me (that is, in my flesh,) dwelleth no good thing: for to will is present with me; but how to perform that which is good I find not.