37And he said to him, “You shall love the Lord your God with all your heart and with all your soul and with all your mind. 38This is the great and first commandment. 39And a second is like it: You shall love your neighbor as yourself.
The Holy Bible: English Standard Version. (2016). (Mt 22:37–39). Wheaton, IL: Crossway Bibles.
Therefore, this is what the law requires and says: You owe nothing except to love Christ and your neighbor; otherwise you are eternally condemned. But then afterwardsSo if you have the Spirit, then you are not an outward spirit; no, you have salvation. Then a person thinks this way: Now, Lord Jesus, I will serve you, die and live for you, and patiently suffer all that is disagreeable from you and from men; do with me as you will. That person will be washed of his sins by the blood of Christ.
Hence, if I have the Holy Spirit, I have faith, by which I cling to God. And if I believe in God, then I also have his love and I love God, foe, and friend. That is why Paul says: I can do all things through the Spirit of God [Phil. 4:13]. The Spirit does not come through fasting, praying, pilgrimages, running to and fro around the country; no, only through faith. So Christ bestows his gifts upon you without any merit whatsoever and what he did for him [i.e., Paul], he does for you also.
Therefore, this is what we say about the law; this is what it is and nothing else: The law kills; your God saves you. And he who does not believe is condemned. In short: Help us, O God, to this faith. Amen. Therefore, guard yourselves against the fool preachers who say: Yes, good works will do it. No, first faith must be present in a man. So he who does not follow Christ and also does not love him is condemned.
As for us, we shall call upon God. Amen.
Luther, M. (1999). Luther’s works, vol. 51: Sermons I. (J. J. Pelikan, H. C. Oswald, & H. T. Lehmann, Eds.) (Vol. 51, pp. 109–111). Philadelphia: Fortress Press.