Exodus 1:10

Come, let us deal wisely with them, lest they multiply, and it come to pass that when any war breaks out, they also join our enemies, and fight against us, and escape from the land.”
Exodus 1:10 Modern English Version (MEV)
 
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Come on,.... Which is a word of exhortation, stirring up to a quick dispatch of business, without delay, the case requiring haste, and some speedy and a matter of indifference:
 
let us deal wisely with them; form some wise schemes, take some crafty methods to weaken and diminish them gradually; not with open force of arms, but in a more private and secret manner, and less observed:
 
lest they multiply; yet more and more, so that in time it may be a very difficult thing to keep them under, and many disadvantages to the kingdom may arise from them, next observed:
 
and it come to pass, that when there falleth out any war, they join also unto our enemies; their neighbours the Arabians, and Phoenicians, and Ethiopians: with the latter the Egyptians had wars, as they had in the times of Moses, as Josephus (p) relates, and Artapanus (q), an Heathen writer, also: Sir John Marsham (r) thinks these enemies were the old Egyptians, with whom the Israelites had lived long in a friendly manner, and so more likely to join with them, the Thebans who lived in upper Egypt, and between whom and the pastor kings that reigned in lower Egypt there were frequent wars; but these had been expelled from Egypt some time ago:
 
and fight against us, and so get them up out of the land; take the opportunity, by joining their enemies and fighting against them, to get away from them out of Egypt into the land of Canaan, from whence they came: this, it seems, the Egyptians had some notion of, that they were meditating something of this kind, often speaking of the land of Canaan being theirs, and that they should in a short time inherit it; and though they were dreaded by the Egyptians, they did not care to part with them, being an industrious laborious people, and from whom the kingdom reaped many advantages.
 
(p) Antiqu. l. 2. c. 10. (q) Ut supra. (Apud Euseb. Praepar. Evangel. l. 9. c. 27. p. 431.) (r) Canon Chron. See 8. p. 107.
 
John Gill’s Exposition of the Bible
 
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In short, the Egyptians were scheming to flip the situation on the children of Israel, to put themselves back on top and Israel on the bottom. They went through the motions of coming up with reasons so they could justify to themselves what they were planning. How typical that people need to justify in their own eyes the evil they do to others.