10 disaster that is Death Angel will be in every household of the Egyptians. The killing of the firstborn of every family. Except for God, family By the blood of the Passover lamb. Painted on the doors of their own homes "house has done as God commanded. Death Angel will not enter the house but would "pass over it" (Passover) and the firstborn of the family will survive.
The 10 dead are sullied by disasters is in every household of Egypt to kill all of the firstborn of the family except the family obeyed God. By the blood of the Lamb take Pasqual came to Tana at the door of the House which was made "according to God's command, diplomacy is not dead in the House, but it will" over every other "(Passover) and the firstborn of the surviving family.