神性の解釈は、倫理的、道徳的、宗教的価値の根本的な革命を反映した起源説であるため、かつてゾロアスター教の研究においてより広く議論された分野の一つであった<ref>Boyce, 1975, p62-64</ref>。
アヴェスター語の形容詞ヴェレストラグナン(「勝利する」)が対応するヴェーダ語vrtrahanに「インドラの資格として(圧倒的に)」登場することから、ゾロアスター教徒とヒンドゥー教徒は、インドイラン時代に戦士神インドラが存在し、アヴェスター語のヴェレストラグナがその神の姿に類似している可能性があると認めている<ref>Benveniste, Renou, 1934, 要ページ</ref>。
The interpretation of the divinity was once one of the more widely debated fields in Zoroastrian scholarship since the theories of origin reflected a radical revolution in ethical, moral and religious values.
Primarily because the Avestan adjective ''verethragnan'' ('victorious') had a corresponding Vedic term ''vrtrahan'' where it appeared "preponderantly [as] a qualification of Indra", Zoroastrians and Hindus accept that {{sfn|Benveniste|Renou|1934}}{{page needed|date=July 2017}} in Indo-Iranian times there existed the warrior god ''Indra'' and that Avestan ''Verethragna'' might be analogous to that divine figure. The Sanskrit cognate of Verethragna is Vritraghna, which is an epithet for [[Indra]] in Vedic literature, and he too is the destroyer of "[[Vritra]]", an Asura whose name literally means obstacle.
But western scholars oppose this identification. In the Avesta, it is the hero warrior-priest ''[[Fereydun]]'' who battles the serpent ''[[Zahhak|Aži Dahāka]]'' (which, for the virtue of 'Azi' being cognate with Sanskrit 'Ahi', snake, is – by proponents of the theory - associated with Vedic [[Vritra]]<!--, although it remains unclear why those two and not any other Azi, or for that matter, Vedic ''ahi budhnya'', should be related -->). One Western scholar claims that, in the Vedas, the epithet 'hero' (''sura'') is itself almost exclusively reserved for ''Indra'', while in the Avesta it is applied to ''Thraetaona'' and other non-divine figures. The term "victorious" is not restricted to ''Verethragna'', but is also a property of a number of other figures, both divine and mortal, including ''Thraetaona''. Then, while in the Vedas it is ''Indra'' who discovers [[Soma (drink)|Soma]], in the Avesta, it is humans who first press [[Haoma]] and ''Thraetaona'' is attributed with being the "inventor of medicine". In the Vedas, ''Indra'' strikes with ''[[vajra]]'', but in the Avesta ''vazra'' is [[Mithra]]'s weapon.