From palin and genesis; (spiritual) rebirth (the state or the act), i.e. (figuratively) spiritual renovation; specially, Messianic restoration -- regeneration.
see GREEK palin
see GREEK genesis
παλιγγενεσίᾳ (palingenesia) − 1 Occurrence
παλιγγενεσίας (palingenesias) − 1 Occurrence