Exodus 12:43

40 Now the children of Israel had been living in Egypt for four hundred and thirty years.

41 And at the end of four hundred and thirty years, to the very day, all the armies of the Lord went out of the land of Egypt.

42 It is a watch-night before the Lord who took them out of the land of Egypt: this same night is a watch-night to the Lord for all the children of Israel, through all their generations.

43 And the Lord said to Moses and Aaron, This is the law of the Passover: no man who is not an Israelite is to take of it:

44 But every man's servant, whom he has got for money, may take of it, when he has had circumcision.

45 A man from a strange country living among you, and a servant working for payment, may not take part in it.

46 It is to be taken in one house; not a bit of the flesh is to be taken out of the house, and no bone of it may be broken.