Oh yes it is. What is not of faith, is of sin. Right from the get failure is derived.
It does not say, if we say we are not sinning. It says, if we say, we have no sin. There is a difference. One is a noun and the other is a verb. Confess before the action, We must fight the flesh. Sin is always knocking at the door. If we live after the flesh we shall die, but if we through the Spirit mortify the deeds of the Body we shall live.
RIGHT For God has said, the Law is in our hearts and minds. His word is in our hearts and mouths. This the Faith in which we preach. For we are dead, but live. Yet not us, but Christ lives in us. And the Life we now live in the flesh we live by the faith of Christ. We do not make void the Law through Faith, we establish it. How shall we who are dead to sin live any longer in it?