"And with great awe" - This [refers to the revelation of] the Divine Presence, as it is stated (Deuteronomy 4:34), "Or did G-d try to take for Himself a nation from within a nation, with trials, with signs and with wonders and with war and with a strong hand and with an outstretched arm and with great and awesome acts, like all that Hashem, your G-d, did for you in Egypt, in front of your eyes?"
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Why is the term "Osos," signs, specifically associated with the Mateh?