Iakchos

...He was eventually accepted into the official religion in a somewhat subdued form when he was worshipped in the temple of Apollo in Delphi as the god in charge of the winter when Apollo was away from the temple. On the other hand, he became the chief god of Orphism under the name of Zagreus, and one of the chief gods of the great Eleusisian mysticism under the name of Iakchos, and thus he was connected to the underworld, and his own mysticism became very popular after the Hellenistic period. This was different from the previous rituals of mass frenzy and ecstasy, and it sought happiness in the afterlife, and it continued to be popular even in Italy across the sea. ...

*Some of the terminology that mentions "Iakchos" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…それはやがて，彼がデルフォイのアポロン神殿において，アポロンが神殿を留守にする冬の間を預かる神としてまつられるに至って，いくぶん鎮静された形で公的宗教の中に受け入れられた。その一方，彼はザグレウスZagreusの名の下にオルフェウス教の大神に，またイアッコスIakchosの名の下にエレウシスの大秘教の主神のひとりとなったため，冥界とのつながりが生じ，ヘレニズム期以降には彼自身の秘教が大流行した。これはかつての集団的狂乱と陶酔の祭儀とは別の，来世での幸福を願うもので，海を渡ったイタリアでも人気を保ちつづけた。…

※「Iakchos」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報