When God's righteousness is mentioned in the gospel, it is God's action of declaring righteous the unrighteous sinner who has faith in Jesus Christ. The righteousness by which a person is justified (declared righteous) is not his own but that of another, Christ.
Martin LutherWhen God creates faith in a man, that is as great a work as if He created heaven and earth all over again.
Martin LutherWhat man, if he were God, would humble himself to lie in the feedbox of a donkey or to hang upon a cross?
Martin LutherGod created Adam master and lord of living creatures, but Eve spoilt all, when she persuaded him to set himself above God's will. 'Tis you women, with your tricks and artifices, that lead men into error.
Martin LutherFrom the beginning of my Reformation I have asked God to send me neither dreams, nor visions, nor angels, but to give me the right understanding of His Word, the Holy Scriptures; for as long as I have God's Word, I know that I am walking in His way and that I shall not fall into any error or delusion.
Martin Luther