 One type of response to the challenge that panentheism lacks a distinctive characteristic suggests a symmetrical, mutual relation between God and the universe as the crucial characteristic of panentheism (Griffin 2004, 43–44; Keller 2008, 73; Clayton 215a, 189; Gregersen 2004, 20, 22, 23; J. Cooper 2006, 29; Olson 2013, 330; Meister 2017, 5; Henriksen 2017, 1084; Stenmark 2019, 27; Gasser 2019, 50).