Anagoge

Anagoge (ἀναγωγή), sometimes spelled anagogy, is a Greek word suggesting a "climb" or "ascent" upwards. The anagogical is a method of mystical or spiritual interpretation of statements or events, especially scriptural exegesis, that detects allusions to the afterlife.
Certain medieval theologians describe four methods of interpreting the scriptures: literal/historical, tropological, allegorical, and anagogical. Hugh of St. Victor, in "De scripturis et scriptoribus sacris", distinguished anagoge, as a kind of allegory, from simple allegory. He differentiated in the following way: in a simple allegory, an invisible action is (simply) "signified" or "represented" by a visible action; Anagoge is that "reasoning upwards" ("sursum ductio"), when, from the visible, the invisible action is "disclosed" or "revealed".
The four methods of interpretation point in four different directions: The literal/historical backwards to the past, the allegoric forwards to the future, the tropological downwards to the moral/human, and the anagogic upwards to the spiritual/heavenly.
In a letter to his patron Can Grande della Scala, the poet Dante explained that his "Divine Comedy" could be read both literally and allegorically; and that the allegorical meaning could be subdivided into the moral and the anagogical.