Do you actually understand what the phrase means? Do you realize that it is from PAUL that the meaning is derived?
That is the point that is in dispute. I hold that it is not from Paul but from Luther. I have demonstrated that in Galatians Paul is only talking about the works of the Mosaic Law. The same is true in Romans. Luther's attempt (and that of all the Protestants who follow his example) to broaden this to include observance of the moral law of God goes against Scripture.