Three religious groups account for most of the believers on the Isle: the Church of the One True God, The Holy Order of the Eternal Void, and the Righteous Path.
The Church of the One True God
Before the base world there was pure law, truth is law and all else is illusion and corruption.
The state religion of the Isle and by far the most popular. The Church is responsible for many good works around the Isle including insuring (comparative) safety on the roads and shipping lanes, charity to the poor, and the championing of righteous causes. The Church rejects the notion of other deities, denouncing other powers as devils and tricksters and stamping out other religious sects when able. Encountering the healers and holy warriors of the Church is a boon or bane depending on ones outlook as they are equally quick to help allies and destroy enemies.
The Holy Order of the Eternal Void
Before law and chaos was the void, pure, holy, and unattainable. Seeking the bliss of the void is the only true path.
In secret enclaves and remote temples one can find the Holy Order. Despite cultural, theological, and material encroachment from the Church, this ancient mystical order remains. They quietly and patiently seek out converts among the mystically oriented. The Order claims that they are a peaceful, intellectual sect, but the Church claims that they are in league with evil forces from beyond space and time.
The Righteous Path
Before the coming of the great powers there was only freedom. Freedom is power, slavery is death.
The Righteous Path has no organization or assembly but is rather a loose association of like-minded mystics. They believe that the purpose of the powers of law is to enslave and that the void is a mere shadow of law. Freedom is the true path of humanity. Some say though that the worshipers of the Righteous Path seek only their own freedom regardless of cost, consorting freely with terrible enemies from Outside. The Church hunts the Righteous Path with obsessive fervor.