What does the encounter between Shemaiah, Avtalyon, and the High Priest teach about hurtful speech, the prohibition known as ona’at devarim?

This source-based Torah study examines the question: What does the encounter between Shemaiah, Avtalyon, and the High Priest teach about hurtful speech, the prohibition known as ona’at devarim? The canonical Hebrew article develops the issue through the weekly Torah portion and the sources cited there. This localized discovery layer preserves the question and the source identity; it does not add any new halakhic, medical, legal, scientific, historical, theological, or empirical ruling or claim beyond the canonical Hebrew source.