On February 17, 1106 the holy prince left his family and was tonsured at the Kiev Caves Lavra, in the Near Caves. Nicholas Sviatosha carried out his obediences with great humility. For three years he worked in the kitchen, for which he chopped wood and carried water. For the next three years, he was gatekeeper at the monastery. The Saint had a garden around his cell. Out of his own means he built at the monastery the Temple of the Holy Trinity and the infirmary church in the name of Saint Nicholas, his patron saint.
Saint Nicholas was the first of the Russian princes to accept monasticism, patiently enduring the reproaches of his brothers for his decision to lead a life of humble obedience.
After he had progressed through various obediences, Saint Nicholas took upon himself the vow of silence. When the Saint received money, he used it to beautify the church and to procure books (because he loved reading), or he distributed it to the poor.
Saint Nicholas was a zealous peacemaker; in 1142 he reconciled the Prince of Chernigov with the Great Prince Vsevolod.
Another time this doctor fell ill again, so the blessed one sent to him the following promise: "On the third day you will recover if you do not heal yourself." The doctor, punished for the first disobedience, obeyed the blessed one and, according to his word, recovered on the third day.
Having said this, the blessed one went with the doctor to the cave and prepared a place for his burial. The doctor spoke as he wept: “I know that if you want, you will pray to the Lord so that you can live longer. Put me here!" The blessed one said to him: “May it be as you wish, if there is God's will for that. Let us serve Him in one monastic image!" Then the doctor, on the advice of the blessed one, took monastic vows and spent three months, incessantly day and night shedding tears during prayer. The blessed one, comforting him, said: "Brother Peter, would you like me to take you with me?" Peter replied: "I want you to let me die on your behalf, but you stay here and pray for me." The blessed one said to him: “Dare, brother, and be ready; in three days, at your request, you will leave this life."
The Saint lived another thirty years, increasing his asceticism at the monastery, and never left the monastery in all this time.
On the day of the repose of this holy prince, almost the entire city of Kiev gathered, giving him the last kiss and with many tears asking for his prayers. He reposed in the year 1143 on October 14th. Especially the brothers of the blessed one, Izyaslav and Vladimir, having learned about his death, wept for him with inexpressible tears.
Since then, Izyaslav always took and put on this hair shirt when he fell ill - and immediately recovered. And in every battle he had this hair shirt with him, and remained unharmed. Once, after a sin, he did not dare to put it on himself and was then killed in battle, but first commanded to put himself in it, hoping that he would be healed at least from eternal diseases and ulcers.
The relics of the Venerable Nicholas rest in the Near Caves, where maps indicate them from 1638.





