Possible Clues:

• Christian Church of Egypt
• For I at last, by the sound of it, may be Christian of a sort
• Related to Egyptian Christians
• Twitching when confronted by policeman's language
• Ancient church language
• Sort of Egyptian policeman with stick bounds off
• Of the Egyptian church
• Officer's on credit, we hear, from this church
• Conservative of vision, producing liturgical language
• Egyptian Christian