Romans 7:21-25 New Revised Standard Version (NRSV)
21 So I find it to be a law that when I want to do what is good, evil lies close at hand. 22 For I delight in the law of God in my inmost self, 23 but I see in my members another law at war with the law of my mind, making me captive to the law of sin that dwells in my members. 24 Wretched man that I am! Who will rescue me from this body of death? 25 Thanks be to God through Jesus Christ our Lord!
So then, with my mind I am a slave to the law of God, but with my flesh I am a slave to the law of sin.