With a heavy heart the Egyptians watched the preparations of the Israelites for sacrificing the animals they worshipped. Yet they did not dare interpose an objection, and when the time came for the offering to be made, the children of Israel could perform the ceremonies without a tremor, seeing that they knew, through many days' experience, that the Egyptians feared to approach them with hostile intent. There was another practice connected with the slaughter of the paschal lamb that was to show the Egyptians how little the Israelites feared them. They took of the blood of the animal, and openly put it on the two side posts and on the lintel of the doors of their houses.