Pentecostalism is sometimes dismissed as a spirituality searching for a theology. Some pentecostals embrace this observation rather than seeing it as a liability. Some pentecostal theologians are now writing liturgical theology, a sub-discipline in theology that elucidates the theological meaning of elements of Christian worship and constructs theology in light of the witness of worship elements. But in addition to the pentecostal theologians who have turned to liturgical theology, the work of a number of pentecostal scholars suggests that much of academic pentecostal theology is implicitly liturgical theology. Even when pentecostal thinkers do not employ the term "liturgical theology" and the vocabulary of that theological sub-discipline, they nonetheless give Christian worship a fundamentally formative role in pentecostal discourse. This phenomenon is not monolithic; we can speak of different pentecostal models of the relationship between worship and belief. But that the phenomenon exists at all is a matter of significance. It means that pentecostalism's identity as a worshipping tradition is bound up with its identity as a theological tradition. This insight has implications for pentecostalism's ecumenical relationships, especially with those Church traditions for whom a treasured liturgical ordo is highly constitutive for Christian identity. Orthodoxy is one such Tradition. Therefore, an exposition of "implicit pentecostal liturgical theologies" can foster dialogue between pentecostalism and Orthodoxy. One of the most important gains for mutual understanding between the two Church traditions is the realization that pentecostals believe that worship makes the Church what it is. The notion of worship as constitutive for Christian identity is a point of continuity between pentecostals and Orthodox.