that thou shouldst kill it before it is evening, and that they should eat it by night on the evening of the fifteenth from the time of the setting of the sun.
For on this night--the beginning of the festival and the beginning of the joy
--ye were eating the passover in Egypt, when all the powers of Mastêmâ had been let loose to slay all the first-born in the land of Egypt, from the firstborn of Pharaoh to the first-born of the captive maidservant in the mill, and to the cattle.
And this is the sign which the Lord gave them: Into every house on the lintels of which they saw the blood of a lamb of the first year, into (that) house they should not enter to slay, but should pass by (it), that all those should be saved that were in the house because the sign of the blood was on its lintels.