May an Israelite sit during the Priestly Blessing, or is there an obligation to stand?

This source-based Torah study examines the question: May an Israelite sit during the Priestly Blessing, or is there an obligation to stand? 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.