Bible Notes Online - Job 41 - ESV
Commentary

A whole chapter given over the leviathan, a whale or crocodile.

v3-4: The leviathan would not submit to man; hence the Lord's challenges here.

v9: No man could subdue him; in fact, just to see him would overpower any man.

v10-11: The contrast with God's power; no man can stand against this sea beast, so who can stand against God? "Who has a claim against me?" asks the Lord, for none can demand anything of Him.

The physical description of leviathan presents something massively powerful.

v26-29: He mocks at any attempt by man to attack him, yet God can draw him out with a hook or a rope (v1-2). Man has no hope of overpowering him (v9), yet he is as a pet in the hands of God (v5).

All these references to animals and creation demonstrate God's utter greatness; in contrast we see man in general, and ourselves in particular, as weak and impotent.