Epiphany and Parousia
The New Testament constantly thinks of the parousia in terms of epiphany, for the relation between the today and the eschaton is much more a tension between the hidden and the manifest, the veiled and the unveiled, than between dates in calendar time. What is still in the future is the full unveiling of a reality, but the reality itself is fully present here and now.Epiphany reminds us that with the birth of Jesus, God became God with us (Immanuel). With this advent, the Kingdom is now present to us in the person of its King - unveiled (revealed) to us personally, as we await, in hope, the full unveiling (revealing) yet to come when Jesus returns bodily in the fulness of his glory, ushering in the fullness of his Kingdom in a new heaven and new earth.
In Epiphany we may think of Jesus' unveiling as a revealing that occured in the past, continues in the present, and comes to fulness in a yet-future culmination. Jesus - God unveiled to us, come!