1 Kings 19:8

in the strength of that meat As Moses had been forty days on Sinai and had taken no food with him, so now Elijah, who was to be in many ways a counterpart of Moses, is divinely sustained by the food which had been supplied to him while he rested. The fasting of Jesus at the time of His temptation lights up these Old Testament histories, which were meant to preach to former ages the lesson which the Lord emphasises, -Man shall not live by bread alone."

forty days and forty nights A great deal has been written to shew that the journey from the edge of the wilderness of Paran to Mount Horeb could not have occupied forty days, even of very slow walking. But there is nothing in the verse to make it necessary to suppose that the writer intended such a sense. Elijah was wandering in despondency and seeking to hide himself. The time spent was not what was required for the journey only, but far more in meditation and prayer, and seeking from God a reason why all the toiling and testimony, which the prophet had bestowed, had proved so unproductive. The spiritual conflict of Elijah prefigures the spiritual conflict of Jesus.

unto Horeb the mount of God So called because, above all other places, it was distinguished through God's manifestations of His power and glory. The LXX. (Vat.) does not represent -of God."