According to John Locke, the conditions of human happiness establish the content of natural law, but God’s commands make it morally binding. This raises two questions. First, why does moral obligation require an authority figure? Second, what gives God authority? I argue that, according to Locke, moral obligation requires an authority figure because to have an obligation is to be accountable to someone. I then argue that, according to Locke, God has a kind of parental authority inasmuch as he is (...) bound by covenant to guide us by revealing the content of the moral law. (shrink)