Roughly equivalent terms in Christianity may be illumination, kenosis, metanoia, revelation, salvation and conversion. The theological term for this submission is kenosis. Much of the earliest debates between the Arian and Orthodox Christians were over kenosis. What he calls "essential kenosis" says God acts preveniently to give freedom/agency to all creatures. A fourth kind would be the "genus kenoticum" (from kenosis), or "tapeinoticum" (from tapeinosis), Phil. Kenosis is only possible through humility and presupposes that one seeks union with God.