Luther wrote about running a race and winning the prize and in so doing he comments on justice as we have been thinking about it. This is a part of his sermon on 1 Corinthians 9.
I therefore so run, as not uncertainly; so fight I, as not beating the air.”
5. Paul here points to himself as exemplar and hints at the cause of failure, viz., lapse from love and the use of the divine word in a wilful, ambitious and covetous spirit, whereas the faith which worketh by love is lacking. Under such conditions, false and indolent Christians run indeed a merry race; yet God’s Word and ways in which they are so alert and speedy are merely a show, because they make them subserve their own interests and glory. They fail, however, to see that they race uncertainly and beat the air. They never make a serious attempt, nor do they ever hit the mark. While it is theirs to mortify ambition, to restrain their self-will and to enlist in the service of their neighbors, they do none of these things. On the contrary, they even do many things to strengthen their ambition and self-will, and then they swear by a thousand oaths that they are seeking not their own honor but the honor of God, their neighbor’s welfare and not their own.
Peter says (2 Pet 1, 9-10) this class are blind and cannot see afar and have forgotten they were purged from their old sins, because they fail to make their calling sure by good works. Therefore, it comes about that, as Paul says, they run uncertainly, beating the air. Their hearts are unstable and wavering before God, and they are changeable and fickle in all their ways, James 1, 8. Since they are aimless and inconstant at heart, this will appear likewise as inconstancy in regard to works and doctrines. They undertake now this and now that; they cannot be quiet nor refrain from factional strife. Thus they miss their aim or else remove the goal, and cannot but deviate from the true and common path.