You will play Bentley Bear as he attempts to journey through his soul to its innermost chambers and the promise of communion with God. As in Interior Castle, Bentley's soul is divided into a series of castles, and is polluted with the enemies from Crystal Castles, which need to be avoided or stunned by jumping over them. Sitting quietly and meditating will cause gems to appear, which need to be collected to proceed deeper into the soul.
Playing each stage, or castle, is divided into four stages, which roughly correspond to the ascent of the soul recorded in Teresa's The Autobiography:
Mental prayer : the player stuns enemies or retreats from them to create space in which to meditate.
The prayer of quiet : the player holds still to initiate meditation, which causes sounds and images to retreat.
The devotion of union : the player collects the gems which appear in the meditative state.
The devotion of ecstasy : the player loses consciousness of being in the body; the location of the door is shown.
A mockup:

A one level prototype:
PLAY