And ye shall let nothing of it remain until the morning; and that which remaineth of it until the morning ye shall burn with fire. Ye shall let nothing of it remain until the morning - Merely to prevent putrefaction; for it was not meet that a thing offered to God should be subjected to corruption, which in such hot countries it must speedily undergo. Thus the body of our blessed Lord saw no corruption, Psalms 16:10; Acts 2:27, because, like the paschal lamb, it was a sacrifice offered to God.
It appears that from the Jewish passover the heathens borrowed their sacrifice termed Propter Viam. It was their custom previously to their undertaking a journey, to offer a sacrifice to their gods, and to eat the whole if possible, but if any part was left they burned it with fire; and this was called propter viam, because it was made to procure a prosperous journey. It was in reference to this that Cato is said to have rallied a person called Q. Albidius, who, having eaten up all his goods, set fire to his house, his only remaining property. "He has offered his sacrifice propter viam," says Cato, "because he has burned what he could not eat." This account is given by Macrobius, Saturn., lib. ii., 2, edit. Bipont., vol. 1, p. 333; and is a remarkable instance how closely some of the religious observances of the people of God have been copied by the heathen nations.