Filioque–Arius, Eusebius of Caesarea, Ossius, Vito

In 598 CE, the Western Church first incorporated the use of “filioque” into the Creed regarding the Holy Spirit; that is, the Holy Spirit proceeded from the Father and the Son. The Eastern Church saw the use of filioque as devaluing God’s creative divine power in that Jesus would become a second source of divine power. The Western Church asserted that the addition just clarified what was already agreed upon in Nicaea and Constantinople. They could not find reconciliation, and the Great Schism ensued and has endured until this very day.