Mt. Sinai—in Arabia?

We set off…to climb each of the mountains,” wrote the fourth-century C.E. Christian pilgrim Egeria of her visit to Mt. Sinai. “They are hard to climb. You do not go round and round them, spiraling up gently, but straight at each one as if you were going up a wall, and then straight down to the foot, till you reach the foot of the central mountain, Sinai itself. Here then, impelled by Christ our God and assisted by the prayers of the holy men who accompanied us, we made the great effort of the climb…I was not conscious of the effort—in fact I hardly noticed it because, by God’s will, I was seeing my hopes coming true.”