Answer:
A Byzantine monk and priest is the right answer.
Step-by-step explanation:
Saint John of Damascus was a monk and priest from Byzantine. His field of study included Theology, Law, Music and Philosophy. He was the one who wrote extensively about the Christian faith and composed various hymns that are even now chanted in the Eastern Christian abbeys around the world. His ventures spanned from theology to diplomacy for he was also the Chief Executive to the king of Damascus.