This chapter examines the relationship between authority (political or religious), toleration and miracles in the writings of Thomas Hobbes, Roger Williams and John Locke. Although these men had very different assumptions, circumstances and purposes, each wrote at length about the political uses of miracles. They intimately linked toleration with epistemology and epistemology with miracles. Thomas Hobbes’ De Cive (1642) and Leviathan (1651) are dense with scriptural argumentation that frequently referenced miracles. Roger Williams, throughout his voluminous writings, emphasised the miracles of Scripture in an attempt to desacralise authority, extended toleration and undermined killing in the name of Christ. John Locke’s Third Letter for Toleration (1692) also discussed miracles at length. He contested the argument that God used miracles in the early church because no suitable magistrate could compel true religion. These thinkers show how three different stances towards toleration could be built on the claimed cessation of miracles. Hobbes used the absence of miracles to restrict toleration; Williams to extend it. Locke used the lack of miracles to undermine coercion. These discussions played an important, and largely forgotten, part in the history of toleration in the early modern transatlantic world.