Consideration of what is meant by authority is a vital task for theology, and especially for those involved in theologically engaging with Scripture. After some general reflections on the nature of authority this article turns specifically to examine biblical authority. The challenges facing those who would offer an account of biblical authority are presented. The generating question for the positive proposals advanced in this essay is: what difference does the doctrine of the Trinity make to the account we render of biblical authority? The action of the triune God is the appropriate context for locating Scripture's salvific ministry. Moreover, Scripture is space that God gives us without violating our creatureliness. Scripture is both part of the created order and a participant within God's saving history. The doctrine of the Trinity invites us to articulate an account of biblical authority that is historical and timeful.