
Basil traveled through the East and studied monastic life. As a result, he formed his own monastic group. Gregory joined him. From their discussions, Basil composed a rule of life for monks. He allowed monks and nuns to operate hospitals and guesthouses and work outside the community. His principles still influence Eastern monasticism.
The two friends lived the monastic life for only about five years. Then Gregory had to return home to care for his father, who was a bishop. When Gregory got home, he was ordained a priest, although he did not think himself worthy. He watched over his father’s diocese.

Basil continued to write for the Church and to clarify the doctrines of the Trinity and the Incarnation. When one town was falling away from the faith, Basil ordained Gregory bishop and sent him there. Gregory went unhappily because he disliked conflict. The two friends were later reconciled.
For 30 years, Constantinople had been under the leadership of supporters of the Arian movement. The bishops of the surrounding areas begged Gregory to come and restore the faith, and again he went, dreading the task. Gregory made his house a church and preached on the Trinity. The people called him “the theologian.”
Both Basil and Gregory were misunderstood, but in spite of this, they rebuilt the faith. Basil died at age 49. Gregory resigned from Constantinople because of opposition and spent his last years reading, writing his autobiography, and enjoying his gardens.