The Solar Templars, and most other Monotheistic religions of the world, profess a belief in a single, ultimate divinity, which we translate mainly using the vocabulary of Abrahamic Monotheism.
God is said to be benevolent towards humans and toward life generally, immortal, having always existed, and genderless (but is referred to with male pronouns). In a notable difference with Abrahamic Monotheism, this god is not all-knowing or all-powerful, though he is said to be able to hear all prayers (even those of heathen and heretics) and "none can stand against him," meaning that the lack of omnipotence is more of a theological technicality than a practical limitation; the presence of evil in the world despite the existence of a benevolent and extremely powerful deity is attributed to divine respect for human autonomy, i.e. he does not simply force humans to be righteous, which would rob them of an opportunity to earn their position in the afterlife through their decision to abstain from sin.
The Twofold Way, the monolatrous ditheist religion of the Murinal Empire, identifies their Good God with the deity of the Solar Temple, but differs theologically. Notably, they attribute evil to the existence of a second, equally powerful but evil deity, which they do not worship or propitiate. They believe that the actions of the righteous - sinless living and correct ritual conduct - cause the power of the Good God to wax stronger. The Twofold Way believes that its gods hatched from a primordial cosmic egg.