October 31, 2017, marks 500 years from the day Martin Luther posted his 95 theses—the act that is widely recognized as the beginning of the Protestant Reformation. As we mark this milestone, we look at the ways that we have been shaped by this historic sea change in church and society, and we reflect on what it means not only to be a product of the Reformation, but also to be always reforming, ever becoming the church that God desires and that the world needs.