Ages of Discovery
From Halopedia, the Halo wiki
Covenant history
The Age of Discovery is a time period in Covenant history. This Age took place during the Prophet-Elite War. It is believed that during this Age, the Prophet's (possibly with the help of the Engineers) discovered the remains of Forerunner technology, probably giving birth to the Covenant religion with its central theme that the activation of the Halos would begin the Great Journey for the Covenant, leading them to salvation. What they didn't know is that activating a Halo causes descruction of all sentient life in the Galaxy.
