Now, anyone who is a Christian must certainly know and feel in himself that such immaculate purity is impossible and that daily the article “the forgiveness of sins” has to rule in us. Therefore it is easy to pardon other people’s faults and to put them all together by saying in the Lord’s Prayer: “Forgive us as we forgive.” This is especially so when it is evident that the other person honors the Word and does not despise or persecute it. Where the Word is, there Christ’s kingdom is, and full forgiveness, which consumes the speck. Therefore, where we notice this, we should not despise or condemn anyone. Otherwise we shall make our own speck a log and fail to obtain forgiveness, because we refuse to forgive other people.” (Luther’s Works, v. 21, pages 220-221).

“Now, it is true that we are not free of transgressions; in fact, no Christian will advance so far that he will be without a speck. St. Paul himself could not advance that far, as he complains in Romans 7:15. And daily all Christendom must pray: “Forgive us our debts,” and must confess the article of the Creed that reads: “the forgiveness of sins.” But these log-bearers and speck-judges refuse to stand for this article. They insist on having everything so pure that there is no inadequacy or fault in it. As soon as they see something wrong, they move right into their judging and condemning, as if they were so holy that they did not need forgiveness of sins or prayer. They want to reform the Lord’s Prayer and extinguish the principal article of the Creed. They are all full of demons and of blindness, while they mourn over other people’s specks. The same thing happens among us when we lose our senses. Those who are full of vices and wickedness cannot stop watching and condemning the tiny vices of other people. Thus the log is the master and the judge of the speck.”  (Luther’s Works, v. 21, pages 220).