The earliest liturgical feasts commemorating the Immaculate Conception are found among the Eastern Liturgies. Many Orthodox theologians do hold personally that the Immaculate Conception is true. It is also true that many Orthodox hold that the Filioque is theologically sound. While these are not universal beliefs among the Orthodox, the main argument among the Orthodox to the proclaiming of these dogmas is they feel that only Dogmas that area promulgated by a Council of all the bishops of the World (East and West) are definitive teachings of the Church.