The Ark shares with Apocalypse a desire for messianic transformation.  The difference between these two arkana is this:  Apocalypse is an ideal state of awareness for the Haelegen to achieve, whereas the Ark is a  cross-generational vessel accumulating efforts in its name.  Apocalypse is an ideal state of resonance actively maintained or sought by an individual or group.  The Ark is a communal treasure chest, expanding even as it transforms the narrative of the past and the horizon of the future