Amos 9:3

Though they hide themselves - All these are metaphorical expressions, to show the impossibility of escape.

He had contrasted heaven and hell, as places impossible for man to reach; as I David says, "If I ascend into heaven, Thou art there: If l make my bed in hell, behold Thee" Psalm 139:8. Now, of places in a manner accessible, he contrasts Mount Carmel, which rises abruptly out of the sea, with depths of that ocean which it overhangs. Carmel was in two ways a hiding place.

1) Through its caves (some say 1,000 , some 2,000) with which it is perforated, whose entrance sometimes scarcely admits a single man; so close to each other, that a pursuer would not discern into which the fugitive had vanished; so serpentine within, that, "10 steps apart," says a traveler , "we could hear each others' voices, but could not see each other." : "Carmel is perforated by a hundredfold greater or lesser clefts. Even in the garb of loveliness and richness, the majestic Mount, by its clefts, caves, and rocky battlements, excites in the wanderer who sees them for the first time, a feeling of mingled wonder and fear. A whole army of enemies, as of nature's terrors, could hide themselves in these rock-clefts."

2) Its summit, about 1800 feet above the sea , "is covered with pines and oaks, and lower down with olive and laurel trees" . These forests furnished hiding places to robberhordes at the time of our Lord. In those caves, Elijah probably at times was hidden from the persecution of Ahab and Jezebel. It seems to be spoken of as his abode 1 Kings 18:19, as also one resort of Elishas 2 Kings 2:25; 2 Kings 4:25. Carmel, as the western extremity of the land, projecting into the sea, was the last place which a fugitive would reach. If he found no safety there, there was none in his whole land. Nor was there by sea;

And though they be hid - (rather, "hide themselves") from My sight in the bottom of the sea, thence will I command the serpent The sea too has its deadly serpents. Their classes are few; the individuals in those classes are much more numerous than those of the land-serpents . Their shoals have furnished to sailors tokens of approaching land . Their chief abode, as traced in modern times, is between the Tropics .

The ancients knew of them perhaps in the Persian gulf or perhaps the Red Sea . All are "highly venomous" and "very ferocious." : "The virulence of their venom is equal to that of the "most" pernicious land-serpents." All things, with their will or without it through animal instinct, as the serpent, or their savage passions, as the Assyrian, fulfill the will of God. As, at His command, the fish whom He had prepared, swallowed Jonah, for his preservation, so, at His "command, the serpent" should come forth from the recesses of the sea to the sinner's greater suffering.

9:3 The serpent - The crocodile or shark.