Patronage of Marriage
The saints' role as patrons of honorable marriage derives from the Syriac narrative of Euphemia and the Goth. A widow named Sophia entrusted her daughter Euphemia to a Gothic soldier who swore at the tomb of Habibus that he would take her as his lawful wife. After bringing Euphemia to his own country, the soldier was found already to have a wife, who poisoned Euphemia's infant child.
According to the account, Euphemia turned in prayer to the three martyrs and was miraculously restored to Edessa, while the soldier who had broken his oath was later exposed and put to death. From this episode the saints came to be invoked for the protection of marriage and the keeping of vows; an akathist addresses them as patrons of honorable marriage, and in Russian and other Slavic custom an icon of the three is given as a wedding gift.