And though they hide themselves in the top of Carmel, I will search and take them out thence; and though they be hid from my sight in the bottom of the sea, thence will I command the serpent, and he shall bite them: Though they hide themselves - All these are metaphorical expressions, to show the impossibility of escape.
Related Commentaries of Amos 9:3
Amos 9:3
3 And though they hide themselves in the top of Carmel, I will search and take them out thence; and though they be hid from my sight in the bottom of the sea, thence will I command the serpent, and he shall bite them: