For God is not gracious and merciful to sinners to the end that they might not keep his Law, nor that they should remain as they were before they received grace and mercy; but he condones and forgives both sin and death for the sake of Christ, who has fulfilled the whole Law in order thereby to make the heart sweet and through the Holy Spirit to kindle and move the heart to begin to love from day to day more and more.
Martin LutherNone can believe how powerful prayer is, and what it is able to effect, but those who have learned it by experience.
Martin LutherWhilst a man is persuaded that he has it in his power to contribute anything, be it ever so little, to his salvation, he remains in carnal self-confidence; he is not a self-despairer, and therefore is not duly humbled before God, he believes he may lend a helping hand in his salvation, but on the contrary, whoever is truly convinced that the whole work depends singly on the will of God, such a person renounces his own will and strength; he waits and prays for the operation of God, nor waits and prays in vain
Martin LutherThat which the sober man keeps in his breast, the drunken man lets out at the lips. Astute people, when they want to ascertain a man's true character, make him drunk.
Martin LutherWhen my heart is cold and I cannot pray as I should I scourge myself with the thought of the impiety and ingratitude of my enemies, the Pope and his accomplices and vermin, and Zwingli, so that my heart swells with the righteous indignation and hatred and I can say with warmth and vehemence: 'Holy be Thy Name, Thy Kingdom come, Thy Will be done!' And the hotter I grow the more ardent do my prayers become.
Martin Luther