The Carolingian 'Renaissance' of the late eighth and ninth centuries, in what is now France, western Germany and northern Italy, transformed medieval European culture. At the same time it engendered a need to ensure that clergy, monks and laity embraced orthodox Christian doctrine. This book offers a fresh perspective on the period by examining transformations in a major current of thought as revealed through literature and artistic imagery: the doctrine of the Passion and the crucified Christ. The evidence of a range of literary sources is surveyed - liturgical texts, poetry, hagiography, letters, homilies, exegetical and moral tractates - but special attention is given to writings from the discussions and debates concerning artistic images, Adoptionism, predestination and the Eucharist.