Exodus 12:41

38 and a great rabble also hath gone up with them, and flock and herd -- very much cattle.

39 And they bake with the dough which they have brought out from Egypt unleavened cakes, for it hath not fermented; for they have been cast out of Egypt, and have not been able to delay, and also provision they have not made for themselves.

40 And the dwelling of the sons of Israel which they have dwelt in Egypt [is] four hundred and thirty years;

41 and it cometh to pass, at the end of four hundred and thirty years -- yea, it cometh to pass in this self-same day -- all the hosts of Jehovah have gone out from the land of Egypt.

42 A night of watchings it [is] to Jehovah, to bring them out from the land of Egypt; it [is] this night to Jehovah of watchings to all the sons of Israel to their generations.

43 And Jehovah saith unto Moses and Aaron, `This [is] a statute of the passover; Any son of a stranger doth not eat of it;

44 and any man`s servant, the purchase of money, when thou hast circumcised him -- then he doth eat of it;