 Theophilus akanga ava kutarisana nekuputika kwehondo dzeByzantine-Arab, mauto eArabhu achiratidza zvakare kugona kwavo kupinda mukati meAnatolia uye kukonzera kurasikirwa kukuru kuByzantine, kana ikapfupika, uye zvinopesana. Kukunda kunokosha kwevaArab kwakanga kuri kupambwa kwenyika yemadzimambo eAmoriummuna 838. Paakafa muna 842, akatsiviwa nomwanakomana wake Michael III 842-867. 