Mahrem occupied the highest position in the religious ideology described for pre-Christian Aksum. He was associated with the dynastic identity of the kingdom and was presented as the protector of the Aksumite people. His role joined divine ancestry to royal authority, making the legitimacy of the monarch inseparable from the protection and lineage attributed to the god.

The deity also embodied warfare and victory. Aksumite inscriptions described Mahrem as invincible and unconquerable by his enemies, while kings consecrated their victorious thrones to him in Aksum and in conquered regions. The religious language of conquest therefore reinforced the political language of empire, presenting military success as an expression of sacred protection.

Mahrem was identified with Ares in the Greek version of Ezana's pagan bilingual inscription. This identification linked him to the Greek god of war, but the Aksumite conception was broader: Mahrem was simultaneously progenitor, protector, war god, royal ancestor, and supreme deity. Sacrificial practice included offerings of domestic animals, with one inscription recording twelve oxen offered to Mahrem at a single ceremony.