Sforno on Exodus 11:1/ספורנו על שמות י״א:א׳

1ישלח אתכם מזה כשלחו, in the same manner as he has already expelled both you and Aaron from his presence when he had lost his cool. (compare 10,11). When he will send the whole people of Israel from his land, he will act under a similar type of stress.

2כלה גרש יגרש אתכם, at that time he had only expelled the two of you. This time he will expel all of you from this entire country. This is the attribute of G’d’s justice at work. When a person obstinately insists on not performing the expressed will of his Creator, (owner) he will ultimately have to do what he tried to avoid doing under infinitely worse circumstances. The Torah had warned us in Deuteronomy in Moses’ famous speech of admonition that because the Jewish people had refused to observe G’d’s commandments joyfully, out of a feeling of gratitude for their success in the Holy Land, they would ultimately still have to do what G’d wanted them to do, and what they had contracted to do, by serving G’d’s servants [host nations in the land of our exile. Ed.] instead of Him directly. (Deut. 28,47-48). Our sages phrase it thus: “everyone who ignores and fails to observe Torah pleading his wealth as his excuse, will ultimately keep the Torah because he has become impoverished.” (Avot 4,10) He will then be so preoccupied with keeping body and soul together that he has no time to devote to Torah study and observance. Numbers 14,28 also outlines the principle of retribution matching the nature of the sin.