Saint Constantine was present at the Ecumenical Councils. He was the Emperor and also a great defender of the True Orthodox Faith.
Saint Spyridon took a roof tile in his hand to symbolise the Holy Trinity – fire rose up from it, water poured out, and clay remained in his hand…
Saint Nicholas was visited by Our Most Holy Mother of God and Our Lord Jesus Christ, who returned to him his Vestments, for he was worthy, having acted not out of passion but from extreme love and piety…
They wrote the Nicene Creed.