But listen to how Luther preaches sanctification.
It is for this reason that your preaching will be something altogether new and foreign to the world, namely, that apart from faith in me all else in sin, regardless how good and holy the deed may be in the eyes of the world. On the other hand, for those who believe in me, all sins, regardless of how great and grievous they may be, are covered up and forgiven; yes everything that believers do, whether they eat or drink, wake or sleep, and so on, all good works are acceptable and pleasing before God. But as far as the godless and unbelievers are concerned, regardless of how good and holy they appear, are all sins, so that even when they take a bite of bread they incur displeasure and commit sin, and on Judgment Day they will have to give account of each vain word they have spoken (Luther's House Postils, The Complete Sermons of Martin Luther, vol. 6, p. 100).
Sanctification is vocational. It's when Jesus, through His imputed righteousness given to the sinner through the means of grace, sanctifies your works. Ordinary works. Everyday works. You don't have to be trained to do them. They aren't special, apart from the fact that the sin which stains them is covered up with Christ's righteousness.
So how do you do good works? Listen to a sermon, eat Jesus' body and drink His blood and believe that these are given for you. Then go do something. Anything. As long as that something isn't returning to a life of sin, you're living the sanctified life. You're doing good works.
