CCRB RECORD No. 0073
Halo 3
Determination: Implied — Corruption 2
The Prophet of Truth is the final antagonist, and the war splits the Covenant into believers and apostates.
Halo 3 resolves the religious plot Halo 2 opened. The High Prophet of Truth travels to Earth to trigger the Great Journey, and the game's climax is the player stopping a clergyman from enacting his faith. Around that, the Covenant has broken into two: the Sangheili, disillusioned after Installation 05 and their replacement as the military leadership caste, form the Separatists, while the Jiralhanae remain loyal to the Prophets with what the lore calls unshakeable conviction. The conflict is explicitly over belief rather than territory. Truth's parting accusation to the Arbiter is that his people never truly believed.