Perhaps a Christian has been feeling ineffectual in his witness of Christ, for any number of reasons. We aren't perfect, we are saved. And as long as we are in our human bodies, we aren't going to be perfect.
How can there be any question of that after one has been saved? If saving faith has been exercised that one time, I thought the belief is that you were in, always in and never, ever again out? Am I missing something?