Sforno on Deuteronomy 7:17/ספורנו על דברים ז׳:י״ז

1כי תאמר...איכה אוכל להורישם, לא תירא מהם, for you will say that they outnumber you. Do not say this in a manner which will inspire fear in you, but reflect on the fact that this would be an argument only if the Lord your G’d had not already demonstrated that with His help you can overcome. זכור תזכור את אשר עשה ה' אלוקיך לפרעה וכל מצרים, they outnumbered you by a far greater margin than the Canaanites and they were stronger than the Canaanites.