From International Center for Joachimist Studies
“Joachim composed this “general introduction”, to the apocalypse between 1188 and 1192. In the Praephatio super Apocalypsim the Joachimist theory of Trinitarian ‘status’ is explained. The ancient patristic doctrine of the six Ages of the world is replaced by the later doctrine of the seven periods of the Age.” (Quoted from here)
References (Quoted from here):
- Praephatio super Apocalipsim, ed. K.-V. SELGE, Eine Einführung Joachims von Fiore in die Johannesapokalypse, in: Deutsches Archiv für Erforschung des Mittelalters 46 (1990), pp. 85-131. Available here (login necessary)
- See also GIOACCHINO DA FIORE, Introduzione all’Apocalisse, a c. di K.-V. SELGE, trad. it. di G. L. Potestà, Roma 1995