Why Does an Accidental Killer's Return from a City of Refuge Depend on the Death of the Kohen Gadol?

This source-based Torah study examines the question: Why Does an Accidental Killer's Return from a City of Refuge Depend on the Death of the Kohen Gadol? It follows the canonical Hebrew discussion through the parasha and classical Jewish sources. This localized layer is a concise discovery summary rather than a full translation of the article body; practical or historical claims remain source-framed and subject to the canonical review status.