In North Carolina, a faith-based 501(c)(3) nonprofit organization facilitates a child sponsorship program that connects North American evangelical Christians with at-risk children in one of postwar Guatemala City's most violent neighborhoods: La Paloma. Pitched in the name of gang prevention, child sponsors help create a context in which these Guatemalan kids might choose God over gangs. Based on fieldwork in North Carolina and in Guatemala, with both sponsors and the sponsored, this article explores how child sponsorship makes the work of gang prevention dependent on the work of self-cultivation. It is an ethnographic approach attuned to what this article understands as the subject of prevention, that is, the individual imagined and acted upon by the imperative to prevent. This includes at-risk youths, in all their racialized otherness, but also (and increasingly so) North American evangelicals who self-consciously craft their subjectivities through their participation in gang prevention. The subject of prevention's observable outcome is a kind of segregation with its own spatial logic. The practice of evangelical gang prevention ultimately produces an observable kind of inequality that says something about the surgically selective nature of Central American security today. Some Guatemalan youth connect with North Americans. Others get left behind.