Romans 7:19-21

New Revised Standard Version, Anglicised Catholic Edition

¹⁹ For I do not do the good I want, but the evil I do not want is what I do. ²⁰ Now if I do what I do not want, it is no longer I that do it, but sin that dwells within me.

²¹ So I find it to be a law that when I want to do what is good, evil lies close at hand.