Azizos — 'the Mighty One,' from Aramaic 'aziz, the same root that gives the Hebrew aziz and the Arabic 'azīz — was the second of the Palmyrene caravan-protector pair, the warrior horseman who accompanied Arsu the camel-rider in their escort of merchants and travelers. Where Arsu was associated with the evening and the camp, Azizos was associated with the morning star — the planet Venus in its morning rising — and with the dawn departure of caravans, when the merchants struck camp in the cool of the early morning and continued their journey toward the next watering-place.
Azizos was depicted as a young warrior on a horse, wearing eastern armor (a coat of scale-mail, a conical helmet, a long lance), his head sometimes haloed with the morning star. The horseman-iconography contrasted with Arsu's camel-iconography, and the two together formed the visual emblem of the caravan-protection cult.
His morning-star aspect connects him to the broader Semitic morning-star tradition. The Babylonian Ishtar and the Phoenician Astarte both had morning-star aspects; the Vedic Ashvins were divine horsemen associated with the dawn; the Greek Castor and Pollux were also dawn-associated divine twins. The connections suggest that Azizos was a Semitic-Aramaean reflex of an old Indo-European or pan-Mediterranean pattern of dawn-divine-twin-horseman, with the regional adaptations of camel-vs-horse and the specific Palmyrene trade-context.
Azizos's cult was extended beyond Palmyra into the Roman empire by the same channels that carried Arsu's. A famous dedicatory inscription to Azizos was found at Edessa in upper Mesopotamia; another at Apamea on the Orontes; another at Aboukir in Egypt. The cult was particularly developed among Roman soldiers of Syrian origin, who carried their household gods to the frontiers of the empire; Azizos has been identified in a number of Roman military dedications from as far away as Britain. After the Christianization of the empire, Azizos's iconography (the warrior-horseman on the dawn) was probably absorbed into the early Christian iconography of warrior-saints — Saint George, Saint Demetrius, Saint Theodore — though the specific lines of descent are difficult to demonstrate.

