those in spirit prison can be welcomed into spirit paradise if they learn the gospel ( all that is required for them to learn for their salvation ) and then accept vicarious works done on their behalf since salvation requires good works to be done while we are still alive on earth ( and whereas death brings about a separation of our spirit from our body we can not do the work god requires ( such as physical baptism ) so we must enlist the help of those still living via vicarious works ( 1 cor 15:29 ) .