The Heart-in-Hand

Also known as the Afterward's Wanderer, the Continuum, the Whirling Weaver, the Father, and the Starlight Loom.

This deity is primarily worshipped in Sayil. They are a singular-yet-multiple being that represents the duality and balance of the world. They are credited with managing the reincarnation cycle and maintaining the world's balance.

Reincarnation

The main tenet of the Heart's Followers is that life is a cycle of reincarnation. Everyone who ever has been will be again, eternally so. This means that no death is permanent: it's merely a temporary end that leads to a new beginning, and knowing this, death should be celebrated as a milestone of growth.

There is some merit to the idea of reincarnation. Some exorcist claim to have found ghosts they were bonded to in small children or other living creatures, with the children or creature supposedly retaining memories from their part life and responding to things they should not know of.