Privileges of Saints: Their Names Written in the Book Life
Source: TTT
Revelation 13:8
And all who dwell on the earth will worship the beast—all whose names have not been written from the foundation of the world in the Book of Life belonging to the Lamb who was slain.
Revelation 20:15
And if anyone was found whose name was not written in the Book of Life, he was thrown into the lake of fire.