Book excerpt: The dynamic nature of Christianity has necessitated its movement from the cathedral to the mountain top. This has occasioned a proliferation of Prayer Mountains throughout Africa. In Yorubaland of southwestern Nigeria, Prayer Mountain is known as Ori-Oke. Like many communities in Africa, the Yoruba are confronted with fundamental challenges in life for which people do not rest until they find solutions. Within the praxis of Nigerian Christian lexicon Ori-Oke is synonymous with the enactment of a sacred space on a mountain top characterised by various prayer regimes, rituals, exorcism and religious practices, aimed at eliciting the help of the divine to alleviate the existential challenges of devotees. This book explores the resacralisation of space on the mountains, highlighting how humans and the divine interact in Yorubaland. It brings into conversation 35 empirically rich scholarly essays on the role of Ori-Oke to those seeking divine intervention in their lives. Today, Ori-Oke have become centres of pilgrimage as a result of the lived experiences of devotees, creating unique religious value quite distinct from the aesthetic value of these mountain tops. The spirituality of Ori-Oke is anchored on the absolute belief in God and the infusion of traditional African worldview sensibilities in religious rites and worship. Ori-Oke spirituality employs resources of Christian tradition, introduced by the formal agents of Christianity, synthesised with traditional culture, to develop a life based on the precepts of an African Christianity. The book is an intellectual discourse on Ori-Oke spirituality, reflecting its contemporary relevance in a context of religious innovation and competition.