I don't think this is confirmed. All that is mentioned is forest god sent forth demons which can simply refer to imu.
His powers are quite literally to oppress and dominate vs JB who frees and liberates. Polar opposites.
Its basically the EG is another term for the Devil basically and Nika is Jesus or God but Oda wont say it like that so as not to upset overtly religious people. Hes going full biblical with this.




