a long time the disputes did not subside, so only several decades later, under the pious empress theodora, iconoclasm began. was finally recognized as heresy. the establishment of orthodox doctrine was marked by a festive service in the st. sophia cathedral in constantinople, held on the first sunday of great lent in 843. then the holy icons were solemnly brought into the cathedral and the due death was performed for them. in honor of this event, it is still celebrated today. a service that was called the rite of the triumph of orthodoxy, that is, the correct praise of god and confession of faith. the rite itself was established by patriarch methodius of constantinople, and to this day it is performed on the first sunday of great lent in all orthodox churches of our church. this service establishes not only the orthodox teaching on icon veneration, but all dogmas. resolutions adopted at seven ecumenical councils. so, on this significant day in the history of our church, we triumph, professing the doctrine of the true orthodox church, proclaiming glory to the eternal memory of all those as