Rabbi Mordechi Eliyahu, the past Chief Rabbi of Israel after his visit to the Rebbe said. "I saw that no secret is hidden from him, and I mean that simply and explicitly. He knows all of the Talmud, Poskim (legal precedents) and in the Mystical works his understanding is very very deep. He is the master of light. He is a master of all the Torah. And is an expert on everything that is happening in Israel. His face shines like an angel of G-d and he himself is higher than any angel. He is the greatest Torah master in our generation and no one is even close to him. And together with this he worries for every Jew in the world."