Do you not know that to whom you present yourselves slaves to obey, you are that one’s slaves whom you obey, whether of sin leading to death, or of obedience leading to righteousness? But God be thanked that though you were slaves of sin, yet you obeyed from the heart that form of doctrine to which you were delivered. And having been set free from sin, you became slaves of righteousness. Romans 6:16-18

For if you live according to the flesh you will die; but if by the Spirit you put to death the deeds of the body, you will live. Romans 8:13