The dramatic frame the Mahabharata gives this text is unusually stark for a devotional hymn: Bhishma, the patriarch mortally wounded in the great battle and lying, in the epic's account, on a bed made of the arrows that struck him, is asked by Yudhishthira, newly victorious and troubled in conscience, what single practice offers the surest path to what is good, and responds by reciting the thousand names rather than offering direct ethical counsel, a teaching delivered explicitly from the position of a dying man addressing the living rather than from ordinary instructional distance. The epic frames the recitation as Bhishma's culminating wisdom, offered once and treated ever since as authoritative precisely because of who is speaking and under what circumstance.
The text does not survive as a single fixed list: several recensions exist with variant readings for individual names, and the major commentarial traditions built around it, including commentaries attributed to Shankara and to the Sri Vaishnava commentator Parasara Bhatta, sometimes interpret the identical name quite differently depending on each commentator's own theological commitments, an Advaita commentator reading a name as pointing toward undifferentiated Brahman where a Vaishnava commentator reads the same name as describing a specific quality or act of the personal Vishnu. This means reciting the thousand names and understanding what each one is claimed to mean are two different undertakings, the first stable and largely uniform across traditions, the second considerably more contested and dependent on which commentarial lineage a reader or reciter follows.