Luther on Galatians 2:20

“…and the life which I now live in the flesh I live by the faith of the Son of God… “

“As if he should say: True it is that I live in the flesh, but this life, whatsoever it is, I esteem as no life; for in very deed it is no true life, but a shadow of life, under the which another liveth, that is to say, Christ, who is my true life indeed: which life thou seest not, but only hearest, as ‘thou hearest the sound of the wind but knowest not whence it cometh or whither it goeth’ (John 3:8). Even so thou seest me speaking, eating, laboring, sleeping, and doing other things, and yet thou seest not my life. For this time of life which I now live, I live indeed in the flesh, but not of the flesh, or according to the flesh, but in faith, of faith, and according to faith. Paul then denieth not that he liveth m the flesh, because he doth all things that belong to a natural man. He useth also carnal things, as meat, drink, apparel, and such like, which without doubt is to live in the flesh; but he saith that this is not his life: and although he useth carnal things, yet he liveth not through them, as the world liveth through the flesh and after the flesh: for it neither knoweth nor hopeth for any life besides this.”

— Martin Luther