(in Christian theology) the renunciation of the divine nature, at least in part, by Christ in the Incarnation.

… from Greek kenōsis ‘an emptying’, from kenoein ‘to empty’, from kenos ‘empty’, with biblical allusion (Phil. 2:7) to Greek heauton ekenōse, literally ‘emptied himself’.

The kenotic ethic is the ethic of Jesus, considered as the ethic of sacrifice. The Philippians passage urges believers to imitate Christ’s self-emptying. In this interpretation, Paul was not primarily putting forth a theory about God in this passage, rather he was using God’s humility exhibited in the incarnation event as a call for Christians to be similarly subservient to others.