Among the Lelet of central New Ireland (Papua New Guinea), a dramatic increase in Pentecostalist fervor has produced significant changes in dreaming. Traditionally, the Lelet have valued dreaming as a means of access to knowledge and power. Now it is seen as a gift bestowed by the Holy Spirit, giving access to new and different forms of knowledge and power. Pentecostalism lays down many rules of conduct for the avoidance of sin, and dreams now play a role in policing them. Drawing on Michel Foucault's work on governmentality, I find that Lelet dreaming acts as a form of self-scrutiny, reminding dreamers of the need to rectify their failures to follow Pentecostal precepts. Beyond this, dreams enable people to address the dilemmas that emerge when they embrace frameworks that impose radically different ways of being in the world than their previous religion did.