Job 41:24-25

24 His heart [leb] is as firm [yatsaq] as a stone ['eben]; yea, as hard [yatsaq] as a piece [pelach] of the nether [tachtiy] millstone.

25 When he raiseth up [sa'eth] himself, the mighty ['ayil] are afraid [guwr]: by reason of breakings [sheber] they purify [chata'] themselves. KJV-Interlinear

24 'His heart is as hard as a stone; Even as hard as a lower millstone. 25 'When he raises himself up, the mighty fear; Because of the crashing they are bewildered. NASB

The heart is the muscle which pumps the blood through the body of living creatures. You have a heart, birds have hearts, animals, even fish have hearts that constantly pump the blood they have, throughout their physical systems.

The heart also refers to the attitude or mind set of the creature. And through this symbolism we can understand the attitude of the beast.

He is steadfast in his purpose. His heart is as a millstone, or namely immovable in its purpose, once set in its place.

Stories of old are filled with the fear that people felt, and even the avoidance of going near a river for fear of becoming a victim to the crocodile. They hide so quietly such that, and even in our current day, many folks fall victim to croc's. No one dares even go after them unless they have a very large cannon strapped to themselves.

And even then, the croc's can launch out of the water with such ferociousness and speed, that the best of hunters can become their victim.

But also remember that these crocodiles represent the jungle environment of this world. As the croc's are immovable, ferocious, uncaring, powerful, destructive, unsympathetic, without conscience in their purpose, so too the world is likewise.

You cannot defeat the crocodile with your hands and likewise your life, with everything you possess, is nothing more than symbolically by means of your own hands. You cannot defeat the world. You cannot change the world's inherent nature. You cannot defeat the world. Without God in your life, you are already the doomed victim.

Now is the time to post a prayer.