When Shabbat must be desecrated to save a sick person, who should do it: anyone, or only someone under the age of twenty?

This source-based Torah study examines the question: When Shabbat must be desecrated to save a sick person, who should do it: anyone, or only someone under the age of twenty? 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.