Who in 754 convened the iconoclast Council of Hieria?
Emperor Constantine VI
Empress Irena
Pope Stefan III
 Emperor Constantine V 
The iconoclast Council of Hieria was a Christian council of 754 which viewed itself as ecumenical, but was later rejected by the medieval Catholic Church. It was summoned by the Byzantine, Eastern Roman Emperor Constantine V in 754 in the palace of Hieria opposite Constantinople. The council supported the emperor's iconoclast position in the Byzantine iconoclasm controversy, condemning the spiritual and liturgical use of iconography as heretical.
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Emperor Constantine VI
Empress Irena
Pope Stefan III
 Emperor Constantine V 
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