Rashi on Exodus 15:16/רש"י על שמות ט״ו:ט״ז

1תפל עליהם אימתה THERE SHALL FALL UPON THEM DREAD — upon those of them who are far away (Mekhilta),

2ופחד AND HORROR — shall fall upon those of them who are near by; and all this really happened just as the matter is stated, (Joshua 2:10) “For we have heard how the Lord dried up [the waters of the Red Sea]” (Mekhilta).

3עד יעבר ... עד יעבר TILL THY PEOPLE PASS … TILL THE PEOPLE PASS — The repetition must be explained as the Targum takes it (until they pass over the Arnon, until they pass over the Jordan).

4קנית denotes [THE PEOPLE] WHICH THOU HOLDEST DEAR above all peoples — like an article purchased (קנוי) at a high price and which is therefore held in affection by the man who bought it.