Pausanias, Description of Greece 2.2.5-7
The things worthy of mention in Corinth include the extant remains of antiquity, but the greater number of them belong to the period of its second ascendancy. On the market-place, where most of the sanctuaries are, stand Artemis surnamed Ephesian and wooden images of Dionysos, which are covered with gold with the exception of their faces; these are ornamented with red paint. They are called Lusios and Bakcheios, and I will now give the story told about them.
They say that Pentheus treated Dionysos spitefully, his crowning outrage being that he went to Cithaeron to spy upon the women, and climbing up a tree beheld what was done. When the women detected Pentheus, they immediately dragged him down, and joined in tearing him, living as he was, limb from limb. Afterwards, as the Corinthians say, the Pythian priestess commanded them by an oracle to discover that tree and to worship it equally with the God. For this reason they have made these images from the tree.
Damascius, Commentary on the Phaedo 1.11
Dionysos is the cause of release, whence the God is also called Lusios. And Orpheus says: “Men performing rituals will send hekatombs in every season throughout the year and celebrate festivals, seeking release from lawless ancestors. You, having power over them, whomever you wish you will release from harsh toil and the unending goad.”
Gold tablet from Pelinna
Now you have died and now you have been born, thrice blessed one, on this very day. Say to Persephone that Bakchios himself set you free. A bull you rushed to milk. Quickly, you rushed to milk. A ram you fell into milk. You have wine as your fortunate honor. And rites await you beneath the earth, just as the other blessed ones.
Herodotos, The Histories 4.79
Skyles conceived a desire to be initiated into the rites of Dionysos Bakcheios; and when he was about to begin the sacred mysteries, he saw the greatest vision. He had in the city of the Borysthenites a spacious house, grand and costly (the same house I just mentioned), all surrounded by sphinxes and griffins worked in white marble; this house was struck by a thunderbolt. And though the house burnt to the ground, Skyles none the less performed the rite to the end. Now the Skythians reproach the Greeks for this Bacchic revelling, saying that it is not reasonable to set up a God who leads men to madness. So when Skyles had been initiated into the Bacchic rite, some one of the Borysthenites scoffed at the Skythians, `You laugh at us, Skythians, because we play the Bacchant and the God possesses us; but now this deity has possessed your own king, so that he plays the Bacchant and is maddened by the God. If you will not believe me, follow me now and I will show him to you.’ The leading men among the Skythians followed him, and the Borysthenite brought them up secretly onto a tower; from which, when Skyles passed by with his company of worshipers, they saw him raving like a Bacchant; thinking it a great misfortune, they left the city and told the whole army what they had seen. After this Skyles rode off to his own place; but the Skythians rebelled against him. […] Sitalkes sent this message to Octamasadas, by a herald, and Octamasadas, with whom a brother of Sitalkes had formerly taken refuge, accepted the terms. He surrendered his own uncle to Sitalkes, and obtained in exchange his brother Skyles. Sitalkes took his brother with him and withdrew; but Octamasadas beheaded Skyles upon the spot. Thus rigidly do the Skythians maintain their own customs, and thus severely do they punish such as adopt foreign usages.