Argonautica: Book 4: line 206

(4.206-211) Thus he spake, and donned his armour of war; and they cried aloud, wondrously eager. And he drew his sword from the sheath and cut the hawsers at the stern. And near the maiden he took his stand ready armed by the steersman Aneaeus, and with their rowing the ship sped on as they strained desperately to drive her clear of the river.

(4.212-235) By this time Medea's love and deeds had become known to haughty Aeetes and to all the Colchians. And they thronged to the assembly in arms; and countless as the waves of the stormy sea when they rise crested by the wind, or as the leaves that fall to the ground from the wood with its myriad branches in the month when the leaves fall -- who could reckon their tale? -- so they in countless number poured along the banks of the river shouting in frenzy; and in his shapely chariot Aeetes shone forth above all with his steeds, the gift of Helios, swift as the blasts of the wind. In his left hand he raised his curved shield, and in his right a huge pine-torch, and near him in front stood up his mighty spear. And Apsyrtus held in his hands the reins of the steeds. But already the ship was cleaving the sea before her, urged on by stalwart oarsmen, and the stream of the mighty river rushing down. But the king in grievous anguish lifted his hands and called on Helios and Zeus to bear witness to their evil deeds; and terrible threats he uttered against all his people, that unless they should with their own hands seize the maiden, either on the land or still finding the ship on the swell of the open sea, and bring her back, that so he might satisfy his eager soul with vengeance for all those deeds, at the cost of their own lives they should learn and abide all his rage and revenge.

(4.236-240) Thus spake Aeetes; and on that same day the Colchians launched their ships and cast the tackle on board, and on that same day sailed forth on the sea; thou wouldst not say so mighty a host was a fleet of ships, but that a countless flight of birds, swarm on swarm, was clamouring over the sea.

(4.241-252) Swiftly the wind blew, as the goddess Hera planned, so that most quickly Aeaean Medea might reach the Pelasgian land, a bane to the house of Pelias, and on the third morn they bound the ship's stern cables to the shores of the Paphlagonians, at the mouth of the river Halys. For Medea bade them land and propitiate Hecate with sacrifice. Now all that the maiden prepared for offering the sacrifice may no man know, and may my soul not urge me to sing thereof. Awe restrains my lips, yet from that time the altar which the heroes raised on the beach to the goddess remains till now, a sight to men of a later day.

(4.253-256) And straightway Aeson's son and the rest of the heroes bethought them of Phineus, how that he had said that their course from Aea should be different, but to all alike his meaning was dim. Then Argus spake, and they eagerly hearkened:

(4.257-293) "We go to Orchomenus, whither that unerring seer, whom ye met aforetime, foretold your voyage. For there is another course, signified by those priests of the immortal gods, who have sprung from Tritonian Thebes. As yet all the stars that wheel in the heaven were not, nor yet, though one should inquire, could aught be heard of the sacred race of the Danai. Apidanean Arcadians alone existed, Arcadians who lived even before the moon, it is said, eating acorns on the hills; nor at that time was the Pelasgian land ruled by the glorious sons of Deucalion, in the days when Egypt, mother of men of an older time, was called the fertile Morning-land, and the river fair-flowing Triton, by which all the Morning-land is watered; and never does the rain from Zeus moisten the earth; but from the flooding of the river abundant crops spring up. From this land, it is said, a king made his way all round through the whole of Europe and Asia, trusting in the might and strength and courage of his people; and countless cities did he found wherever he came, whereof some are still inhabited and some not; many an age hath passed since then. But Aea abides unshaken even now and the sons of those men whom that king settled to dwell in Aea. They preserve the writings of their fathers, graven on pillars, whereon are marked all the ways and the limits of sea and land as ye journey on all sides round. There is a river, the uttermost horn of Ocean, broad and exceeding deep, that a merchant ship may traverse; they call it Ister and have marked it far off; and for a while it cleaves the boundless tilth alone in one stream; for beyond the blasts of the north wind, far off in the Rhipaean mountains, its springs burst forth with a roar. But when it enters the boundaries of the Thracians and Scythians, here, dividing its stream into two, it sends its waters partly into the Ionian sea, and partly to the south into a deep gulf that bends upwards from the Trinaerian sea, that sea which lies along your land, if indeed Achelous flows forth from your land."

(4.204-302) Thus he spake, and to them the goddess granted a happy portent, and all at the sight shouted approval, that this was their appointed path. For before them appeared a trail of heavenly light, a sign where they might pass. And gladly they left behind there the son of Lyeus and with canvas outspread sailed over the sea, with their eyes on the Paphlagonian mountains. But they did not round Carambis, for the winds and the gleam of the heavenly fire stayed with them till they reached Ister's mighty stream.