Three theological traditions each transformed the concept of the enemy.

Evidence

With Paul and Jesus, the enemy could be personal, political, theological, but he was to be equally loved. Augustine theologized the enemy, made it into an abstract “thing.” With Aquinas, the enemy becomes legion again. Disseminated anew into these different (if not entirely distinct) discursive spheres, enter the enemies. — Gil Anidjar, The Jew, the Arab, 195