John Hesychastes John Silentiarius
In his tenth year as bishop, his brother-in-law, Pazinikos, was appointed governor of Armenia, and immediately began meddling in Church affairs. Overwhelmed by secular matters he was not prepared for, he secretly fled to Jerusalem, praying for a place to hide from the world. Accepted as a novice at Saint Sabas monastery, working as a steward and construction worker. After four years at the monastery, he was being considered for ordination, and felt compelled to reveal his secret the the Jerusalem Patriarch Elias. Elias permitted him to take a vow of silence, and wall himself into his cell for another four years.
Lived as a hermit in a hut built against a rock face in the desert wilderness for nine years; legend says he was protected from brigands by a lion that stayed nearby. Saint Sava convinced John to return to the monastery. His secret came out, and he lived many years at the monastery under the protection of Sava. Late in life he left his solitude to fight the Origenists. Miracle worker. Healer. Exorcist.
Catholic Encyclopedia
For All The Saints