Only once and with consequences

Jesus told his disciples that he will return only once and that when he does, after a time of great tribulation, it will be visible to everyone and be followed by immediate and dire consequences for those unprepared and for those who were adversaries of God.

A Look at some Watchtower publications about baptism

A look at the bible Students and different Jehovah's Witnesses regulations or prescriptions and rules for undergoing baptism.