What is the epic simile in this passage? What does it suggest?

Can you quote the lines for me please?

Briareos or Typhon, whom the Den

By ancient Tarsus held, or that Sea-beast

Leviathan, which God of all his works

Created hugest that swim th' Ocean stream:

Him haply slumbring on the Norway foam

The Pilot of some small night-founder'd Skiff,

Deeming some Island, oft, as Sea-men tell,

With fixed Anchor in his skaly rind

Moors by his side under the Lee, while Night

Invests the Sea, and wished Morn delayes:

What good is it if we remain alive and healthy forever if it's only so we can suffer forever?

Satan answered quickly, I know it stinks to be under his power, but I'll tell you one thing--we will never do good deeds again. We'll get all our pleasure from doing evil, because it's the opposite of what he wants.

And if he tries to turn our evil actions into something good, we'll find another way to turn them into evil again.

And sometimes we'll succeed, and disrupt his plans and cause him a lot of grief.

But look around--the enemy forces have gone back to Heaven, and the storm that surrounded us is calm now.

Maybe his anger has been satisfied, or maybe he's turning his back on us in contempt--either way, let's take advantage of the opportunity.

See that dark barren plain over there?

Let's get out of these flames and go rest there--if we can get any rest in this miserable place.

Let's gather everybody there and decide how we can recover from this disaster and make more trouble for the enemy.

As Satan spoke to his companion only his head and blazing eyes were up above the flames.

The rest of his body was stretched out on the lake of fire like a big whale--the kind that sailors, they say, sometimes mistake for an island and spend the night anchored by its side.

So stretcht out huge in length the Arch-fiend lay

Chain'd on the burning Lake, nor ever thence

Had ris'n or heav'd his head, but that the will

And high permission of all-ruling Heaven

Left him at large to his own dark designs,

That with reiterated crimes he might

Heap on himself damnation, while he sought

Evil to others, and enrag'd might see

How all his malice serv'd but to bring forth

Infinite goodness, grace and mercy shewn

On Man by him seduc't, but on himself

Treble confusion, wrath and vengeance pour'd.