The Triune's efforts to ensnare humanity were hindered by the rogue angel Inarius however, who founded the Cathedral of Light. 'Dialon' was said to bring purpose to humanity, and carried the 'Tablets of Order.' Each of the Primes took on an alter ego for worship and in Diablo's case, he was known as Dialon, the Spirit of Determination, represented by a ram in Triune iconography. To this end, they founded the Triune-a seemingly benevolent religion that was actually a front for their true motives.

Sensing the dormant power within humanity and reasoning it could be turned to suit their own ends, the Prime Evils began a campaign to tip humanity over to their side. Diablo informed his brothers of this new world's existence. However, due to the actions of the Vizjerei, the powers of Hell came to learn of the existence of Sanctuary and its inhabitants-creatures that had been born from the coupling of angels and demons.

The Eternal Conflict came to a halt with the disappearance of the Worldstone.

Diablo 3 rebirth system