I am going to get right down inside this thing. What is a Christian?

from “The School of Christ,” by T. Austin-Sparks, ch. 2

I am going to get right down inside this thing. What is a Christian? Is a Christian one who was not a very good tempered person, but is now good-tempered; not a very genial person, but is now very much more genial; a person who was not very zealous, but is now very zealous; a person who is different in disposition from what he was formerly. Is that a true definition of a Christian? Give me a homeopathic cabinet. Bring along to me a very irritable person. Give him a dose of, what shall I say?—nux vomica; in two or three hours he will be a very good-tempered man. Is he a Christian? Give him something else; turn him back to what he was before. Was he saved, and has he backslidden? Drugs can change a man’s temper in a few hours. From being a lethargic, careless, indifferent person, you become alive, energetic, active; from being miserable, discontented, morose, melancholic, disagreeable, irritable, you become amiable, pleasant, relieved from all that nervous strain which was making you like that, and all that disordered digestion which was making you such a boor to live with. For a little while, you have made a Christian with drugs! You see the point.
The only answer for deliverance and emancipation is, ‘It is not what I am, it is what He is; Christ abides the same.’ He is not as I am, varying here in this human life from hour to hour and day to day: He is other….faith simply means that we are put into the position where we have not got it in ourselves, we only have it in Another, and can only know it and enjoy it by faith in that Other.
Thus Galatians 2:20 always comes with renewed force—”I have been crucified with Christ; and it is no longer I that live, but Christ liveth in me: and that life which I now live in the flesh I live in faith. the faith, which is in the Son of God, who loved me, and gave himself up for me”