Holy people live holy lives. Luther's doctrine of vocation begs to be rediscovered in our church. That doctrine is the setting and the context for both the doctrine of the royal priesthood and the doctrine of sanctification. This can be seen from Luther's treatise of 1520, On the Freedom of the Christian. Faith lives in the freedom of Christ Jesus.
Love lives a life of service to the neighbor.
Yet faith and works of love must be distinquished. In other words the vocatio or calling of the Christian faith is a double calling. It is first of all, the call to faith. Otherwise he is not a Christian. He lives in Christ through faith, in his neighbor through love.