Theodore, nicknamed Studite, was born in Constantinople in 758. Through the efforts of his noble and wealthy parents, he received a good and versatile education. In the 32nd year of his life, Theodore, together with his wife Anna, decided to devote themselves to monastic life. In Saccudiana, near Constantinople, Saint Theodore indulged in the most rigorous feats of monasticism, zealously continuing to study the Holy Scriptures, the interpretation of the Holy Fathers, and the writings of Basil the Great. Consecrated as a presbyter, Theodore was elected abbot against his will. Meanwhile, the Monk Theodore was faced with a new feat of counteracting the violators of the truth and the truth of Christ.
Tsar Constantine forcibly forced his wife Maria to take monastic vows, and he married his relative. The example of lawlessness was not left without imitators. Among those close to the court, cases of divorces and illegal marriages began to be repeated. The Monk Theodore did not want to remain an indifferent witness to the disregard for the statutes of the Church and acted as a denouncer of the tsar's iniquity.
The enraged Constantine ordered him to be imprisoned, from where, after severe tortures in 796, the monk, together with 10 monks, was exiled to imprisonment in the city of Thessalonica. After the death of Constantine, his mother, Empress Irina, freed Saint Theodore from imprisonment and in 798 gave him control of the Studion Monastery. The Monk Theodore arranged well and protected the monastic life with a strict rule, known under the name of Studian. According to this charter, any property was forbidden to the monks; they had to learn various skills necessary for the monastery, and themselves produce all the work necessary for everyday life.