Did the Firstborn Who Served in the Sanctuary Need to Wear Priestly Garments?

This source-based Torah study examines the question: Did the Firstborn Who Served in the Sanctuary Need to Wear Priestly Garments? The canonical Hebrew discussion develops the issue through the weekly Torah portion and the sources cited there, preserving the distinctions, tensions, and practical implications of the original text. This localized discovery layer does not add any new halakhic, medical, legal, scientific, historical, theological, or empirical ruling or claim beyond the canonical Hebrew source.