Venerable Sergius of Radonezh (Сергий Радонежский, Sergiy Radonezhsky)—also translated as Sergey Radonezhsky or Serge of Radonezh was a spiritual leader and monastic reformer of medieval Russia. Together with Venerable Seraphim of Sarov, he is one of the Russian Orthodox Church's most highly-venerated saints.
He was originally baptized with the name Bartholomew (Varfolomei in Russian). On October 7,1337 Bartholomew was tonsured by Igumen Metrophanes, taking the name of the holy Martyr Sergius (October7).
Saint Sergius of Radonezh was born in the village of Varnitsa, near Rostov, on May 3, 1314. His parents were the pious and illustrious nobles Cyril and Maria (September 28). The Lord chose him while still in his mother's womb. In the Life of St Sergius it is reported that even before the birth of her son, St Maria and those praying heard the thrice-repeated cry of the infant at the Divine Liturgy: before the reading of the Holy Gospel, during the Cherubic hymn, and when the priest pronounced: "Holy Things are for the Holy."
God gave Cyril and Maria a son whom they named Bartholomew.
At the age of seven, Bartholomew was sent to study together with his two brothers: his older brother Stephen, and his younger brother Peter. His brothers learned successfully, but Bartholomew fell behind in his studies, even though the teacher gave him much special attention. The parents scolded the child, the teacher chastised him, and his classmates made fun of his lack of comprehension. Finally, Bartholomew besought the Lord with tears to grant him the ability to read.
Once, his father sent Bartholomew out after the horses in the field. Along the way he met an angel sent by God under the appearance of a monk. The Elder stood at prayer beneath an oak in a field. Bartholomew approached him, and bowing, waited for the Elder to finish praying. The monk blessed him, gave him a kiss and asked what he wanted.
Bartholomew answered, "With all my soul I want to learn reading and writing. Holy Father, pray for me to God, that He may help me to become literate." The monk fulfilled Bartholomew's request, offering up his prayer to God. In blessing the child he said to him: "Henceforth, my child, God gives you to understand reading and writing, and in this you will surpass your brothers and peers".
Then the Elder took a vessel and gave Bartholomew a piece of prosphora."Take, child, and eat," said he."This is given to you as a sign of the grace of God, and for the understanding of Holy Scripture." The Elder wanted to leave, but Bartholomew asked him to visit at the home of his parents. His parents received their guest with joy and offered him their hospitality.
The Elder replied that it was proper to partake of spiritual nourishment first, and he bade their son to read the Psalter. Bartholomew began to read, and his parents were amazed at the change that had occured with their son. In parting, the Elder prophetically said of St Sergius, "Your son shall be great before God and the people. He shall become a chosen habitation of the Holy Spirit."
After this the holy child read without difficulty and understood the contents of books. He became immersed in prayer with a special fervor, not missing a single church service. Already in childhood he imposed upon himself a strict fast. He ate nothing on Wednesdays and Fridays, and on the other days he sustained himself on bread and water.