"Of course, we must also teach good works and love, but it must be done in the right place - that is, when we are dealing with works, not justification. Here the question is how we are justified and attain eternal life, and so we reject and condemn all good works, for this passage will not allow any argument based on good works.
"Indeed, 'the law is holy, and the commandment is holy, righteous and good' (Romans 7:12). But when we are dealing with justification, it is not the time or place to speak about the law. The question is, who is Christ, and what benefit has he brought us? Christ is not the law; he is not what I have done or what the law has done; he is not my love, my obedience, my poverty. He is the Lord of life and death, a mediator, the Savior, the redeemer of those who are under the law and sin. By faith we are in him and he in us....
"Christ is no law, and therefore he does not exact the law and its observance. He is 'the Lamb of God who takes away the sin of the world' (John 1:29). It is only faith that takes hold of this, not love. Love, however, must follow faith, as a sort of thankfulness. Victory over sin and death, then, and salvation and everlasting life too, did not come through the law, nor through the observance of the law, nor yet through the power of free will, but through the Lord Jesus Christ alone."
Martin Luther, Galatians, p. 91.