Exodus 10:9

(9) With our sons and with our daughters . . . for we must hold a feast.—It was customary in Egypt for children to join in festivals (Herod. ii. 60).

With our flocks and with our herds.—The family of Jacob brought numerous flocks and herds into Egypt (Genesis 47:1). These had, no doubt, increased, notwithstanding the oppression, and at the time of the Exodus must have been very numerous. The requirement to “take a lamb for an house” (Exodus 12:2) on the institution of the Passover involved the killing, on a single day, of 200,000 lambs. Even after this the flocks and herds which went out with them (Exodus 12:38) were “very much cattle.”