Purity of Spirit

"It is said remorse is the pain of sin. We feel no remorse."

- A transmission sent from the crew of Purity of Spirit to Reach

Purity of Spirit was a in service with the Covenant's fleet. Assigned to the Fleet of Particular Justice, Purity of Spirit was the sister ship of Undiminished Entelechy.

History
"This world will be ruled in blood."

- Purity of Spirit to UNSC Pillar of Autumn

Purity of Spirit was assigned to Supreme Commander Thel 'Vadamee's Fleet of Particular Justice with her sister ship Undiminished Entelechy. On August 30, 2552, the Fleet of Particular Justice arrived in the Epsilon Eridani system to reinforce Covenant forces during the Fall of Reach. During this battle, Purity of Spirit engaged forces of the United Nations Space Command near Reach. Later in the battle, the ship's crew sent threatening transmissions as a form of physiological warfare to UNSC forces and warships on and around Reach, including to the.

Towards the end of the Fall of Reach, Pillar of Autumn fled from Reach into slipstream space for the Soell system, where she was pursued by Purity of Spirit and the rest of the Fleet of Particular Justice. Arriving in the Soell system before Pillar of Autumn in September 2552, the Fleet of Particular Justice discovered Installation 04 in the system. Along with Undiminished Entelechy, Purity of Spirit was secretly ordered to conduct a close-range survey of Installation 04 by the Minor Prophet of Stewardship, shortly before the arrival of Pillar of Autumn. During the resulting Battle of Installation 04, Undiminished Entelechy was destroyed by 'Vadamee after she was infected by the Flood.