The Bahram Yasht builds its praise of Verethragna through a sequence of ten transformations, each one announced and described in turn: a strong, well-shapen wind; a bull with yellow ears and golden horns; a white horse with golden caparison; a burden-bearing camel; a boar with sharp teeth and sharp tusks; a youth of fifteen, bright-eyed, in the flush of first strength; a raven-like bird of prey; a wild ram; a fighting buck; and, last, an armed man wielding a golden weapon. The sequence is not arbitrary: each earlier form contributes a specific quality, speed in the wind, strength in the bull, the boar's ferocity, the bird's keen sight, that culminates rather than merely precedes the tenth and final form, a human warrior fully armed, as though the god's power gathers itself across nine animal and elemental images before finally arriving at the shape a mortal fighter could most directly recognise and draw strength from.
The hymn is explicit that Verethragna grants what he embodies, strength, health, offspring and victory to whoever worships him with the correct offerings and the correct words, which is what makes the Bahram Yasht function, beyond its place in the Avesta as scripture, as a prayer a warrior facing battle could recite for the god's aid in becoming, if only briefly, something closer to that final armed and victorious form.