“The truth of the Gospel is this, that our righteousness comes by faith alone, without the works of the Law. The falsification or corruption of the Gospel is this, that we are justified by faith but not without works of the Law. The false apostles preached the Gospel, but they did so with this condition attached to it…This is not the truth of the Gospel; it is falsehood and pretense. The true Gospel, however, is this: Works or love are not the ornament or perfection of faith; but faith itself is a gift of God, a work of God in our hearts, which justifies us because it takes hold of Christ as Savior. Human reason has the Law as its object. It says to itself: ‘This I have done; this I have not done.’ But faith in its proper function has no other object than Jesus Christ, the Son of God, who was put to death for the sins of the world. It does not look at its love and say: ‘What have I done? Where have I sinned? What have I deserved?’ But it says: ‘What has Christ done? What has He deserved?’ And here the truth of the Gospel gives you the answer: ‘He has redeemed you from sin, from the devil, and from eternal death.’ Therefore faith acknowledges that in this one Person, Jesus Christ, it has the forgiveness of sins and eternal life. Whoever diverts his gaze from this object does not have true faith; he has a phantasy and a vain opinion. He looks away from the promise and at the Law, which terrifies him and drives him to despair.”
Martin Luther, 1535 Commentary on Galatians, LW vol. 26, pg 88
