He said, “I have been very jealous for the LORD, the God of hosts. For the people of Israel have forsaken your covenant, thrown down your altars, and killed your prophets with the sword, and I, even I only, am left, and they seek my life, to take it away.”
Here is, I. Elijah housed in a cave at Mount Horeb, which is called the mount of God, because on it God had formerly manifested his glory. And perhaps this was the same cave, or cleft of a rock, in which Moses was hidden when the Lord passed by before him and proclaimed his name, Exo 33:22.
Commenting on 1 Kings 19:9-18
And he said, I have been jealous for the Lord God of hosts,.... Through zeal for the glory of God he had slain four hundred and fifty prophets of Baal, and this had stirred up the malice and revenge of Jezebel against him, who sought his life, and which had obliged him to flee, and come to this place for shelter; this is the first...
And he said, I have been very jealous for the LORD God of hosts: for the children of Israel have forsaken thy covenant, thrown down thine altars, and slain thy prophets with the sword; and I, [even] I only, am left; and they seek my life, to take it away. (e) He complains that the more zealous he was to maintain God's glory, the more cruelly he was persecuted.