Over the centuries of Church history, it was gradually that the presentation of Christian Eschatology got the features shown in the typical De Novissimis treatises at the beginning of 20th century. These treatises were greatly infl uenced by the fi rst synthesis in Eschatology entitled Prognosticum futuri saeculi. It was written in 688 by Julian of Toledo. The influence of this seminal work on those treatises was on both their structure and contents. They focused on the chronologically last realities through a literalistic, nonsymbolic hermeneutics. In spite of its great infl uence, in Brazil Julian of Toledo s work is still unpublished and generally unknown. For this reason, its presentation and commentary become relevant in our context. They contribute to a better understanding of the history of Theology. That would help us to be enriched by the Prognosticum values, and concurrently to avoid falling into its defi ciencies. Such things are fruitful to present, as our time demands, God s defi nitive truth that: 1) was expressed as realized Eschatology in the event of Jesus Christ; 2) can be expressed as present Eschatology in the existence before death; and 3) will be expressed as future Eschatology in the final reality.