The Westminster Assembly (1643-1653) provides us with theological and practical resources for the continuing place in society of God’s moral law. The Assembly is a crucial historical building block for the work of defending Christian truth in society. There are, of course, many historical examples of the practical application of these truths to society. As well as establishing the theological basis in the writings of the Assembly we will also consider the example of William Wilberforce (1759- 1833) as he contended in the public square both for Christian truth and for the Christian moral law. What lessons can we learn for today and the future work of the Christian Institute from these foundations? How can we equip the saints with the same confidence to contend as William Wilberforce?