Studying the early church can feel like entering a maze of bishops, emperors, councils, and arcane controversies. This book introduces early Christian theology by focusing on one particularly influential figure, Basil of Caesarea (ca. AD 330-378). It views Basil against the backdrop of a Roman Empire that was adopting Christianity. In Basil's day, Christians were looking for unity in the teaching and practice of their faith. This study acquaints the student with Basil's brilliant--and often neglected--theological writings. In particular, Saint Basil's reflections on the Trinity emerge from these pages as fascinating and illuminating testimonies to the faith of early Christians.