Sforno on Exodus 14:31/ספורנו על שמות י״ד:ל״א

1היד הגדולה אשר עשה ה' במצרים; a reference to the מדוי מצרים in Deuteronomy 7,15 which described afflictions suffered by the Egyptians while at the Sea of Reeds.

2וייראו העם, describing a feeling of immediate fear as in Deuteronomy 28,60 אשר יגורת מפניהם, “of which you were very much afraid.”