Sforno on Exodus 33:16/ספורנו על שמות ל״ג:ט״ז

1ובמה יודע איפא, even though we may indeed enter the Holy Land and the angel will drive out the Canaanites, how would anyone become aware that what was happening was orchestrated by Divine forces? After all, people get driven out from their land in war all the time! There is nothing supernatural in such a phenomenon.

2הלא בלכתך עמנו ונפלינו, Moses refers to statements such as the ones he made in his song after the Egyptians drowned in Exodus 15,13-14 נחית בחסדך עם זו גאלת נהלת בעזך שמעו עמים ירגזון; “In Your love You led the people You redeemed; in Your strength You guide them to Your holy abode.” The people hear and tremble;” the reason the people tremble is because they watch miracles happening, indicating that the Jewish nation is a nation apart. As a result, they will lose their courage to resist the conquest, as Rachav testified even almost 40 years later when she told the spies that everyone is aware of the miracle G’d had wrought on behalf of His people and that no one has any courage left which would make him fight with a chance of success. (Joshua 2,10-11)