Charles H. Spurgeon on Psalms 114:8

The remarkable rock in Sinai which tradition regards as the one which Moses smote, is at least well chosen in regard to its situation, whatever opinion we may form of the truth of that tradition, which it seems to be the disposition of late travellers to regard with more respect than was formerly entertained. It is an isolated mass of granite, nearly twenty feet square and high, with its base concealed in the earth —we are left to conjecture to what depth. In the face of the rock are a number of horizontal fissures, at unequal distances from each other; some near the top, and others at a little distance from the surface of the ground. An American traveller (Dr. Olin) says: "The colour and whole appearance of the rock are such that, if seen elsewhere, and disconnected from all traditions, no one would hesitate to believe that they had been produced by water flowing from these fissures. I think it would be extremely difficult to form these fissures or produce these appearances by art. It is not less difficult to believe that a natural fountain should flow at the height of a dozen feet out of the face of an isolated rock. Believing, as I do, that the water was brought out of a rock belonging to this mountain, I can see nothing incredible in the opinion that this is the identical rock, and that these fissures, and the other appearances, should be regarded as evidences of the fact." —John Kitto.