7 Then Midas, king of Pessinus, wishing to withdraw the youth from so disgraceful an intimacy, resolves to give him his own daughter in marriage, and caused the gates of the town to be closed, that no one of evil omen might disturb their marriage joys. But the mother of the gods, knowing the fate of the youth, and that he would live among men in safety only so long as he was free from the ties of marriage, that no disaster might occur, enters the closed city, raising its walls with her head, which began to be crowned with towers in consequence.
Acdestis, bursting with rage because of the boy's being torn from himself, and brought to seek a wife, fills all the guests with frenzied madness: the Phrygians shriek aloud, panic-stricken at the appearance of the gods; a daughter of adulterous Gallus cuts off her breasts; Attis snatches the pipe borne by him who was goading them to frenzy; and he, too, now filled with furious passion, raving frantically and tossed about, throws himself down at last, and under a pine tree mutilates himself, saying, “Take these, Acdestis, for which you have stirred up so great and terribly perilous commotions.” With the streaming blood his life flies; but the Great Mother of the gods gathers the parts which had been cut off, and throws earth on them, having first covered them, and wrapped them in the garment of the dead.
From the blood which had flowed springs a flower, the violet, and with this the tree is girt. Thence the custom began and arose, whereby you even now veil and wreath with flowers the sacred pine. The virgin who had been the bride, whose name, as Valerius the pontifex relates, was Ia, veils the breast of the lifeless youth with soft wool, sheds tears with Acdestis, and slays herself After her death her blood is changed into purple violets. The mother of the gods sheds tears also, from which springs an almond tree, signifying the bitterness of death. Then she bears away to her cave the pine tree, beneath which Attis had unmanned himself; and Acdestis joining in her wailings, she beats and wounds her breast, pacing round the trunk of the tree now at rest. Jupiter is begged by Acdestis that Attis may be restored to life: he does not permit it.
What, however, fate allowed, he readily grants, that his body should not decay, that his hairs should always grow, that the least of his fingers should live, and should be kept ever in motion; content with which favours, it is said that Acdestis consecrated the body in Pessinus, and honoured it with yearly rites and priestly services.
Source: Against the Heathen (New Advent)