Rashi on Exodus 14:27/רש"י על שמות י״ד:כ״ז

1לפנות בקר AT THE TURNING OF THE MORNING at the time when the morning turns to come).

2לאיתנו means TO ITS ORIGINAL STRENGTH (Mekhilta).

3נסים לקראתו FLED TOWARDS IT — because they were thrown into confusion and were bewildered and on that account ran towards it.

4וינער ה AND THE LORD OVERTHREW (or, shook out or emptied out) — as a person empties out a pot, turning what is on top underneath and what is underneath on top: thus they were emptied out of their chariots and they rose and fell till at last they were broken to pieces in the sea, and the Holy One, blessed be He, put vitality (strength) in them so that they could bear the pain (and thus their agony was protracted) (cf. Mekhilta).

5וינער — Onkelos renders this by ושניק which is an expression for confounding in Aramaic, and there are many examples of it in the Agadic expositions.