The idea that lament and protest might have a valuable place in Christian liturgy and practice has become a topic of increasing philosophical-theological interest. In The Hiddenness of God, Rea defended the view that God authorizes and validates lament and protest from human beings—including impious protest, which emerges from outright anger, sorrow, or other negative emotions in response to apparent divine injustice. But this view apparently stands in tension with widespread assumptions about worship and prayer. In particular, it is hard to see how God can authorize and validate impious protest if it is always true that everyone ought to worship God; and it is also tempting to think that impious protest is an instance of what Lauren Winner calls the ‘characteristic deformation of prayer’, which, in turn, suggests that it is defective prayer that should neither be authorized nor validated by God. This chapter addresses these apparent tensions.