theophany
A manifestation of a deity to a person.
It was a bewildering theophany, since it was impossible to make out anything clearly in the stormy obscurity of thunder, lightning, smoke and wind.
Where it comes from
From Late Latin theophania, corresponding to theo- + -phany, from θεός (theós, “God”) + φαίνω (phaínō, “to shine, appear”).
Adapted from the Wiktionary entry theophany (CC BY-SA 4.0).