How do we know that Michael's dispute with the devil was true?
Answered in 1 source
The story of Michael disputing with the devil is not explicitly recorded in the Old Testament but is accepted as true through divine revelation and apostolic instruction.
The apostle Jude references the dispute between Michael the archangel and the devil concerning Moses' body, which is not found in the canonical Old Testament texts. The substance of the story is believed to derive from Jewish tradition or divine revelation, as indicated in Jude 1:9. Many ancient scholars and church fathers acknowledged the existence of writings outside of Scripture that provided context or elaboration on biblical events. Jude’s citation lends authoritative weight to the account, showing that God occasionally reveals truths through means that are not strictly canonical. Therefore, while the story may originate from non-canonical sources, it is affirmed as true within the context of apostolic teaching and the broader understanding of God's revelations to His people.
Commentary