Before Skyrim, Morrowind's Tribunal Became Living Gods

screenrant.com:

Nerevar's Tribunal council becoming living gods is one of the most bizarre phenomena in all of the Elder Scrolls lore. Morrowind is many players' favorite Elder Scrolls game, and that's likely partly because of the complex events that occur both during and before the game's main story. Prior to Skyrim and Morrowind, two factions living in Morrowind, the Chimer and Dwemer, waged war over a precious stone known as The Heart of Lorkhan. This Aedric artifact was hidden deep within Morrowind's Red Mountain, and it contained a power that granted immortality; however, it was inaccessible until Kagrenac, a master engineer and high priest of the Dwemer, took it upon himself to study and craft the tools needed to access the stone's power.

Many believe that Kagrenac's tampering with the artifact is the reason the Dwemer aren't in any Elder Scrolls games, although it's not certain why they disappeared from Tamriel altogether. After vanishing, the Chimer became the primary race in Morrowind, with Nerevar as their champion. His inner Tribunal — Vivec, Almalexia, and Solthal Sil — concluded that Kagrenac's tools should be put away, never to be used again. After Nerevar's death, however, the Tribunal went against his wishes.

Related: Elder Scrolls Lore Books Missing From Skyrim

Morrowind's Red Mountain housed the godly powers of The Heart of Lorkhan that Vivec, Almalexia, and Solthal Sil used to god-like beings in The Elder Scrolls. In defiance of their master and tempted by the stone's lure, «The Three» used Kagrenac's tools to gift themselves immortality and rise up over the past gods. After the Dwemer's disappearance, a split formed within the Chimer race, as some thought the old Daedric deities — Azura, Boethiah, and Mephala — had