Thomas the Apostle of the 12

Reading from the Synaxarion:

The name Thomas means, "twin." He was one of the Twelve, a Galilean
by birth. Sophroneus (not the famous Patriarch of Jerusalem [7th
Century, celebrated March 11], but a friend of Jerome's), quoted also by
Jerome, says that Saint Thomas preached to the Parthians, Pesians, Medes,
Hyrcanians, Bactrians, and neighbouring nations. According to Heracleon, the
Apostle died a natural death; according to other accounts, he was
martyred at Meliapur His tomb was known by Saint John Chrysostom to be at
Edessa in Syria, to which city his holy relics may have been translated
from India in the fourth century.

Apolytikion in the Third Tone
O Holy Apostle Thomas, intercede with the merciful God that He
grant unto our souls forgiveness of offences.

Kontakion in the Fourth Tone
Christ's Apostle, who was filled with God's divine grace, he who was His
genuine and faithful servant in all truth, all-lauded Thomas exclaimed
aloud in deep repentance: Thou art both my God and Lord.