They were all soldiers under one general, taken captive in the time of Licinius for their faith in Christ. They were stripped naked and cast onto a frozen lake at Sebastia in Pontus. They endured the entire night, encouraging each other to be patient. Some accounts say that their persecutors placed warm baths in their sight on the shore to entice them to renounce Christ. Finally one of their number, broken by his sufferings, apostatized and left the company. One of the guards, named Aglaius, saw in a vision thirty-nine wreaths descending from heaven onto the heads of the faithful sufferers, and was moved to declare himself a Christian. He was immediately sent to join the martyrs on the frozen lake, keeping the number of forty complete. In the morning all of them, almost dead, were cast into fire, and their remains thrown in the lake. On the third day the martyrs appeared to Peter, the local bishop, and told him to search for them in the lake. The bishop went to the lake on a dark night with his clergy, and one account says that the bones of the martyrs rose to the surface and burned there like a candle. The relics were gathered and given honorable burial.

This is the most common account. The Prologue gives a somewhat different version, in which the martyrs were made to stand, not on the frozen lake, but in the freezing waters.