He went down into the deep parts of the Earth where the giants Cottus, Briareus, and Gyes had been hidden by their father. Cronos had bound them, weighing them down with chains. But now Zeus loosed them and the hundred-armed giants in their gratitude gave him the lightning and showed him how to use the thunderbolt. Zeus would have the giants fight against the Titan gods. But although they had mighty strength Cottus, Briareus, and Gyes had no fire of courage in their hearts. Zeus thought of a way to give them this courage; he brought the food and drink of the gods to them, ambrosia and nectar, and when they had eaten and drunk their spirits grew within the giants, and they were ready to make war upon the Titan gods. "Sons of Earth and Heaven," said Zeus to the hundred-armed giants, "a long time now have the Dwellers on Olympus been striving with the Titan gods. Do you lend your unconquerable might to the gods and help them to overthrow the Titans." Cottus, the eldest of the giants, answered, "Divine One, through your devising we are come back again from the murky gloom of the mid Earth and we have escaped from the hard bonds that Cronos laid upon us. Our minds are fixed to aid you in the war against the Titan gods." So the hundred-armed giants said, and thereupon Zeus went and he gathered around him all who were born of Cronos and Rhea. Cronos himself hid from Zeus. Then the giants, with their fifty heads growing from their shoulders and their hundred hands, went forth against the Titan gods. The boundless sea rang terribly and the earth crashed loudly; wide Heaven was shaken and groaned, and high Olympus reeled from its foundation. Holding huge rocks in their hands the giants attacked the Titan gods. Then Zeus entered the war. He hurled the lightning; the bolts flew thick and fast from his strong hand, with thunder and lightning and flame. The earth crashed around in burning, the forests crackled with fire, the ocean seethed. And hot flames wrapped the earth-born Titans all around. Three hundred rocks, one upon another, did Cottus, Briareus, and Gyes hurl upon the Titans. And when their ranks were broken the giants seized upon them and held them for Zeus. But some of the Titan gods, seeing that the strife for them was vain, went over to the side of Zeus. These Zeus became friendly with. But the other Titans he bound in chains and he hurled them down to Tartarus.