Note 138 — LETTER XXXIII.
Reading edition
The three possibilities of getting quit of this difficulty have been tried by Robinson, Ritter, and Josephus. The first places Raphidîm in the neighbourhood of Gebel Mûsa; the second sees an omission between Raphidîm and Sinai, and accepts two divine mountains; the third transposes the passage, and does not mention Horeb at all, but only Sinai.