When Alkmênê was on the point of being delivered at Thêbes, Zeus publicly boasted among the assembled gods, at the instigation of the mischief-making Atê, that there was on that day about to be born on earth, from his breed, a son who should rule over all his neighbors. Hêrê treated this as an empty boast, calling upon him to bind himself by an irremissible oath that the prediction should be realized. Zeus incautiously pledged his solemn word; upon which Hêrê darted swiftly down from Olympus to the Achaic Argos, where the wife of Sthenelos (son of Perseus, and therefore grandson of Zeus) was already seven months gone with child. By the aid of the Eileithyiæ, the special goddesses of parturition, she caused Eurystheus, the son of Sthenelos, to be born before his time on that very day, while she retarded the delivery of Alkmênê. Then returning to Olympus, she announced the fact to Zeus: “The good man Eurystheus, son of the Perseid Sthenelos, is this day born of thy loins: the sceptre of the Argeians worthily belongs to him.” Zeus was thunderstruck at the consummation which he had improvidently bound himself to accomplish. He seized Atê his evil counsellor by the hair, and hurled her forever away from Olympus: but he had no power to avert the ascendency of Eurystheus and the servitude of Hêraklês. “Many a pang did he suffer, when he saw his favorite son going through his degrading toil in the tasks imposed upon him by Eurystheus.”[208] [208] Homer, Iliad, xix. 90-133; also viii. 361.— Τὴν αἰεὶ στενάχεσχ᾽, ὅθ᾽ ἑὸν φίλον υἱὸν ὁρῷτο Ἔργον ἀεικὲς ἔχοντα, ὑπ᾽ Εὐρυσθῆος ἀέθλων.