Numbers 14:13

And Moses said unto the Lord
In an abrupt manner, as the following words show, his mind being greatly disturbed and distressed by the above threatening,

then the Egyptians shall hear [it];
that the Lord had smitten the Israelites with the pestilence; the Targum of Jonathan interprets it of the children of the Egyptians who were suffocated in the sea:

for thou broughtest up this people in thy might from among them;
they were once sojourners among them, and slaves unto them, and they were delivered from them by the mighty hand of the Lord upon the Egyptians, destroying their firstborn; and therefore when they shall hear that the Israelites were all destroyed at once by a pestilence in the wilderness, it will be a pleasure to them, as follows.