Romans 7:18-20

18For I know that in me, that is, in my flesh, good does not dwell: for to will is there with me, but to do right [I find] not.

19For I do not practise the good that I will; but the evil I do not will, that I do.

20But if what I do not will, this I practise, [it is] no longer I [that] do it, but the sin that dwells in me.