Another cause to note has to do with Christian mysticism's medieval context christian mysticism. That context furthered Christian mysticism thanks to features such as plagues and high mortality rates, persecutions of heresy, the Crusades, and the opulence of the church. Why? Because Christian mysticism offered a "retreat" from an often overwhelming, hostile, and confusing world. It focused upon subjective inner experiences, allowing the mystic to disengage or ignore the outside world.