Consideration can also be made to the Vedic diety Rudra, whose name has been considered to mean “to cry, howl” and also “shining”.

The Nila Rudra of the Upanishad starts “Om. Thee I beheld in thy descending down from the heavens to the earth”,

The 9th verse as follows “This Aruna of the dawn that is tawny and copper-red and scarlet-hued. Aruna refers to the celestial charioteer that moves the sun (Surya).

The verse in Isaiah is a direct reference to this scripture about Rudra, with the various meanings of helel related to the Nila Rudra Upanishad.

Consideration can also be made to the Vedic diety Rudra, whose name has been considered to mean “to cry, howl” and also “shining”.

The Nila Rudra of the Upanishad starts “Om. Thee I beheld in thy descending down from the heavens to the earth”,

The 9th verse as follows “This Aruna of the dawn that is tawny and copper-red and scarlet-hued. Aruna refers to the celestial charioteer that moves the sun (Surya).

The verse in Isaiah is a direct reference to this scripture about Rudra, with the various meanings of helel derived from Rudra as described in the Nila Rudra Upanishad.