To be sure the anticipatory proleptics of the "historical survey in future-form" associated with pseudonymity rests upon the literary fiction of the pre-historicality of the revelation of these secrets; but this fictionality is intended to emphasize precisely by means of its esoteric quality that God will allow the elect righteous (cf. I Enoch 1:1) and wise persons (cf. I Enoch 100:6, 104:12) of the present day to participate already in his revelation that has proceeded from the mouths of the righteous and wise ones of pre-history, through the "literary" medium of the book.
Source: wiktionary