 
 <prompt> Wetin be di language wey dem dey find for di texts of native religion wey dey come from di Iranian region? Based on di question wey dey before dis one, write small tori wey get di answer. E fit be 1 - 20 sentences. Context: <response>: The other directly attested Old Iranian dialects na di two forms of Avestan, wey dem name from their use for di Avesta, di liturgical texts of indigenous Iranian religion wey now dey known as Zoroastrianism but for di Avesta itself e just dey known as vohu daena (later: behdin). Di language of di Avesta dey divided into two dialects, wey people sabi as "Old (or 'Gathic') Avestan", and "Younger Avestan". These terms, wey start for di 19th century, dey slightly misleading because 'Younger Avestan' no be only much younger pass 'Old Avestan', but also from a different geographic region. Di Old Avestan dialect dey very archaic, and dey roughly di same stage of development as Rigvedic Sanskrit. On the other hand, Younger Avestan dey about di same linguistic stage as Old Persian, but because dem dey use am as sacred language, e retain its "old" characteristics for long after di Old Iranian languages don yield to their Middle Iranian stage. Unlike Old Persian, wey get Middle Persian as its known successor, Avestan no get clearly identifiable Middle Iranian stage (the effect of Middle Iranian no fit separate from effects due to other causes). 