Rashi on Numbers 14:13/רש"י על במדבר י״ד:י״ג

1ושמעו מצרים WHEN THE EGYPTIANS SHALL HEAR IT — i.e. when they hear how you are killing them, [as stated in the previous verse].

2כי העלית — The word כי here is used in the sense of אשר, “that”, and the meaning is: they have seen that Thou broughtest them forth in Thy great strength from their midst, and when they hear that Thou art killing them they will not say that it is because they have sinned against Thee, but they will say that against them Thou wast able to fight, but against the in habitants of the Land of Canaan, however, Thou wast unable to fight; and this is the meaning of —