St. Catherine's Monastery is an Orthodox monastery on the Sinai peninsula at the foot of Mount Sinai in Egypt. One of the oldest Christian monasteries in the world, St. Catherine's incorporates the burning bush seen by Moses and contains many valuable icons. Above the monastery is Mount Sinai (see separate article), where Moses received the Ten Commandments from God. Because God spoke to Moses in these places, this area is sacred to three world religions: Christianity, Islam and Judaism.