Man, God and the Torah – The Death and Life of the Word
In Jewish Thought and Philosophy by Rabbi Nathan Lopes Cardozo
Rabbi Aha said in the name of Rabbi Yochanan: When at Mt. Sinai the Israelites heard the word “I” (the first word of “I am the Lord your God” in the “Ten Words”), their souls left them...It may perhaps be argued that this Midrash, like no other text, summarizes the essence of Judaism and its dialectic nature...