Feast Day: September 25th
The Great Earthquake at Constantinople 447 AD, and the Miracle of the Trisagion: During Proclus’ reign great earthquakes were occurring in Constantinople for four months continuously. Being struck with fear, the Romans went out of the city to the so-called Kampos, and were supplicating God and processing with the Bishop night and day. One day, when the Earth was shaking and all the people were continuously crying out the ‘Kyrie eleison’ (Lord have mercy), at about the third hour, suddenly and in sight of all a young child was taken up into the air, and a Divine Voice was heard around it announcing to the Bishop and the people to process and to say thus: ‘Holy God, Holy Mighty, Holy Immortal, have mercy on us’, nothing else being added. Our Father among the Saints, Proclus, accepting the decision, processed the people chanting thusly and the earthquake immediately ceased. The blessed Pulcheria and her brother, supporting the miracle, established that this divine hymn be chanted throughout the entire ecumene; and from that day all the Churches sing to God each day.”
“Holy God, Holy Mighty, Holy Immortal, have mercy on us.”