Revelation 21:6

Revelation 21:6 is a framed quote in Vault 101's clinic as well as a paper note in Fallout 3.

Background
Revelation 21:6 is a verse from the Christian Bible. It is mentioned several times by James, the Lone Wanderer's father, who shares that it was the favorite verse of Catherine, his deceased wife and the player character's mother. The Lone Wanderer is first introduced to the passage in the first tutorial quest and later in the game, after being reunited with their father, they learn that this passage was the inspiration for Project Purity. The code "216" is used to activate the water purifier.

Locations

 * Jefferson Memorial - The note is added to the Lone Wanderer's Pip-Boy when talking to their father James when first entering Project Purity's rotunda during the quest the Waters of Life as well as in the sub-basement.
 * Vault 101 - The framed quote in located in the living quarters and clinic.
 * It is also shown in an ending slide.