Bible name
From XFamily - Children of God
"Bible names" are pseudonyms used within the group. A Bible name is chosen, or assigned, when a new member first joins – a practice derived from the Christian tradition of taking a new name at baptism. In the group's early days, some members were instructed to open a Bible and point randomly, adopting the first name they came across.
Taking new names within The Family International is also done to obscure members' "system names," and "system" or legal names are often treated as selah information.
It is not uncommon for group members to change their Bible name on occasion, usually to reflect a spiritual rebirth.