Mashiyach is calling us to come out of Mystery Babylon and not just an assembly. Mystery Babylon is wickedness and rebellion towards Mashiyach in holding on to abominable doctrines from Hagar which is against Alahym's Torah
One may be out of an assembly and may still be part of Mystery Babylon if he or she is not repentant of false doctrine.The call is to come to repentance from dead works. Getting back to the Abary roots, to the spiritual olive tree Yasharal to be engrafted into it. Shalum
