Mitra

Worshipped almost unrivalled in the kingdoms of Aquilonia, Argos, Ophir, Nemedia, and to a lesser extent in Zingara and Brythunia, Mitra is the God that accompanied the arrival of the Hyborians.  Unlike the battle-minded gods of the north, Mitra is a gentle god. Blood sacrifice is expressly forbidden in the Mitran religion, the rituals of which are instead marked by simplicity, dignity, and beauty. Unlike pagan idols, the statues of Mitra were mere emblems meant to represent the god in idealized form and not to be worshipped themselves.

Indeed, priests of Mitra, and many of his followers, are unusual in that they are monotheistic, denying the existence of foreign deities, whereas it is more common to acknowledge their existence but deny their supremacy.

The cult of Mitra is a cult of justice and mercy.  It is however morally demanding, as those whose life is deemed unworthy can be banished to a hellish afterlife as punishment.  Those who attain a certain level of moral purity are rewarded with access to a blissful dimension, where they can gaze upon the face of Mitra and the host of saints and angels that surround him.

Koth, which at one time knelt to Mitra, afterwards fell under the influence of Shem and Stygia and abandoned the gentle god for the more sensual rites of Ishtar, as did Khoraja and Khauran.