THE LAMB MUST BE EATEN THE SAME NIGHT

Exodus 12:8 And they shall eat the flesh in that night, roast with fire, and unleavened bread; and with bitter herbs they shall eat it.

Exodus 12:9 Eat not of it raw, nor sodden at all with water, but roast with fire; his head with his legs, and with the purtenance thereof.

Exodus 12:10 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.