The Gathas hold a unique status within Zoroastrianism as the material Zoroastrian tradition regards as the prophet Zoroaster's own direct poetic composition, distinct from the rest of the Avesta, which later priestly generations composed or compiled in Younger Avestan, making Old Avestan the closest linguistic access modern scholarship and Zoroastrian religious practice has to the tradition's founding figure himself.
The Gathas address Ahura Mazda, the supreme god of Zoroastrianism, in intensely personal and philosophically dense poetic language exploring themes of truth, asha, and the cosmic struggle between truth and falsehood central to Zoroastrian ethical dualism, themes scholars including Mary Boyce have argued represent one of the earliest sustained monotheistic and ethically systematic religious poetries to survive from the ancient world.
Modern Zoroastrian communities continue to recite the Gathas in their original Old Avestan form during specific high liturgical occasions, even though comprehension of the archaic language beyond memorized recitation is now largely restricted to specialist priests and academic scholars of Iranian religion. Western scholarship on the Gathas, including translations by Martin Haug in the nineteenth century and more recent critical work by M.L. West, has repeatedly revised its interpretation of key terms, illustrating how genuinely difficult the Old Avestan corpus remains to render with confidence even after nearly two centuries of dedicated philological study.