Simplify the following text for a Grade 10 native English-speaking person.
Original: The Maghen Abraham Synagogue ( - `` KanÄ `` s MÄ ` ghÄ `` n AbrÄ ` hÄ m '' ; - `` Beth HaKenesset Maghen Abraham '' ) , is the oldest synagogue in Beirut , Lebanon .
Simplified: The Maghen Abraham Synagogue is the oldest synagogue in Beirut , capital of Lebanon .