Matthew Poole and continuators on Exodus 12:38

38 And a mixed multitude went up also with them, and flocks, and herds even very much cattel.

Consisting of Egyptians or other people, who went with them either because they were their servants, or that by this means they might free themselves from the servitude which they endured under hard masters in Egypt; or because the glorious works which they had seen had raised their esteem of God and of his people, and made them expect a share in the great felicities which they presumed would be conferred upon a people so highly honoured and beloved of such an almighty and alsufficient God. And because their hearts were not sincere nor their ends right they soon repented of their choice, Numb. 11. 4. Compare Zech. 8. 23.

Marginal references: Heb. a great mixture. Num. 11. 4.