What does the change in the cherubim symbolize precisely at the time of the Temple’s destruction?

This source-based Hagut Yosef essay explores the question: What does the change in the cherubim symbolize precisely at the time of the Temple’s destruction? The canonical Hebrew article develops the theme through Torah sources and reflection on human life. This localized discovery layer preserves the source’s meaning and identity and does not add new halakhic, historical, psychological, medical, legal, political, scientific, or empirical claims beyond the Hebrew source.