Even as Believers we continue to sin and stand in need of God's forgiveness

"It is indeed true that there is no one passion ceaselessly driving us to distraction. Anger does not always burn, evil desire does not always rage, we are not constantly tormented with envy, but one of these succeeds the other. When they all sleep, then languor and sloth do not sleep. If you are strenuously active, then pride awakens. As I have most truly said, just as we are not without the flesh, so we do not work without the flesh. So we are neither free of carnal faults, ...nor do we act without them. Latomus constructs an extremely stupid syllogism on the basis of a singular or particular premise when he argues thus: Sometimes a passion is quiescent; therefore sin is not in every good work. He ought to have said: Sometimes all are quiescent, and sin is entirely dormant. This is impossible, for sin is a living thing in constant movement changing as its object change. that there is indeed no sin in sleep is to be ascribed to the grace of God, not to nature. I mean by this that it is not because of the absence of the use of reason that there is then no sin which is condemned. The fact that we cannot sleep in purity is sin. Why have we not remained in that uprightness in which we could have slumbered purely and done only what is pure? The drunkard is not excused by his drunkenness if he sins because of it. Why did he not remain sober? Thus nothing is forgiven us for our own sake, nothing is pure because of us, but only because of the grace and gift of God. What excuses the unbaptized infants who are eternally damned?" - Martin Luther, Against Latomus