All that was conceded to her was that Hercules should be put under the dominion of Eurystheus, King of Thebes, his eldest brother, a harsh and pitiless man. This only half satisfied the hatred of Juno, but it made the life of Hercules exceedingly bitter.
In fact, Hercules was but a child, when Juno sent two enormous serpents against him. These serpents, gliding into his cradle, were on the point of biting the child when he, with his own hands, seized them and strangled the life out of their slimy bodies.
Having grown up to man's estate, Hercules did many mighty deeds of valor that need not be recounted here. But the hatred of Juno always pursued him. At length, when he had been married several years, she made him mad and impelled him in his madness to kill his own beloved children!
When he came again to his sober senses, and learnt that he was the murderer of his own offspring he was filled with horror, and betook himself into exile so that he might hide his face from his fellow men. After a time he went to the oracle at Delphi to ask what he should do in atonement for his dreadful deed.
He was ordered to serve his brother Eurystheus--who, by the help of Juno, had robbed him of his kingdom--for twelve years. After this he was to become one of the Immortals. Eurystheus feared that Hercules might use his great strength and courage against him, in punishment for the evil that he had done. He therefore resolved to banish him and to impose such tasks upon him as must certainly bring about his destruction. Hence arose the famous twelve labors of Hercules.
Eurystheus first set Hercules to keep his sheep at Nemea and to kill the lion that ofttimes carried off the sheep, and sometimes the shepherd also.
The man-eater lurked in a wood that was hard by the sheep-run. Hercules would not wait to be attacked by him. Arming himself with a heavy club and with a bow and arrows, he went in search of the lion's lair and soon found it.
Finding that arrows and club made no impression upon the thick skin of the lion, the hero was constrained to trust entirely to his own thews and sinews. Seizing the lion with both hands, he put forth all his mighty strength and strangled the beast just as he had strangled the serpents in his cradle. Then, having despoiled the dead man-eater of his skin, Hercules henceforth wore this trophy as a garment, and as a shield and buckler.