Saint Basil of Caesarea, also known as Saint Basil the Great, was a Christian bishop in the 4th century. He played a significant role in the development of Christian monasticism and is recognized for his contributions to the early Church. His writings, particularly on theology and social issues, helped shape Christian doctrine and practice. Basil was born around 330 AD in Cappadocia, in modern-day Turkey. He founded the first known Christian monastery and established guidelines for monastic life. He is also known for his efforts in combating heresies and promoting the Nicene Creed, which affirmed the divinity of Jesus Christ. Basil is celebrated as a saint in both the Eastern Orthodox and Roman Catholic traditions.