This response to Thomas and Alexander affirms their effort to argue, from a Pentecostal perspective, for the canonical authority of the longer ending of Mark's Gospel (16.9-20). Notwithstanding the text-critical evidence for accepting this text as a secondary addition to the original Gospel narrative, Wall considers it a significant test case for addressing the tensions between critical exegesis and Scripture's performance within the community of faith as its biblical canon (or 'rule of faith'). He argues for the priority of Scripture's formative role both to establish and subsequently to validate its continuing authority for the whole church. For this and other reasons, Wall concludes that faithful interpreters must approach the longer ending to Mark's Gospel, even though 'non-Markan', as inspired Scripture and formative of Christian faith. Moreover, when considered within the context of the fourfold Gospel witness, this text proffers a distinctive contribution to the ending of its authorized narrative of Jesus' life. Adding a number of observations in support of Thomas and Alexander's study, Wall's essay proceeds to push beyond their proposal to conclude that a 'Pentecostal' interpretation of Scripture extends meaning beyond Pentecostal readers to challenge and enrich the beliefs and practices of the church catholic.