Many of the surviving texts associated with seventh-century Ireland deal with eschatology. In general, these texts convey assumptions on the fate of the soul after death that are consistent with the traditional Christian view in late antiquity in the West, namely, that the ultimate destiny of most Christians will not be determined till the great universal judgment at the end of time. To illustrate this point I will adduce the theological treatise Liber de ordine creaturarum and the moral treatise De XII abusiuis saeculi, as well as religious poetry and hagiographical works, and set them in their likely liturgical context. In contrast, the Vision of Fursey and Adomnán's Life of Columba stand out as revealing the strong influence of concepts originating in the early Christian ascetic circles of Egypt. Irish Christians were thus also exposed to the idea that the fate of all individual souls will be determined immediately after death. Awareness and even endorsement of this point of view will have prepared the way toward accepting the novel teaching that a finite period of painful purification immediately follows the death of most Christians. The survival of these two texts demonstrating the presence in seventh-century Ireland of the belief that the final determination of an individual's fate occurs at the time of death draws attention to the radical change in perspective that must have been an essential initial step in the very formulation of the doctrine of purgatory.