Exodus 12:27

27 that ye shall say to them, This passover is a sacrifice to the Lord, as he defended the houses of the children of Israel in Egypt, when he smote the Egyptians, but delivered our houses.

Exodus 12:27 Meaning and Commentary

Exodus 12:27

That ye shall say, it is the sacrifice of the Lord's
passover
This lamb is a sacrifice, both eucharistical, or by way of thanksgiving for their safety, when the firstborn of the Egyptians were slain, and for their deliverance out of Egypt; and also propitiatory, the blood of this lamb being a propitiation or atonement for all within the house where it was sprinkled, as before observed from Aben Ezra; and typical of the atoning sacrifice of Christ our passover, ( 1 Corinthians 5:7 ) and this was commanded by the Lord, and approved of and accepted by him, and therefore called his sacrifice as well as passover, for the following reason: who passed over the houses of the children of Israel, when he smote the
Egyptians, and delivered our houses;
their families, not suffering the destroying angel to enter into them, which was a very distinguishing mercy, and worthy of remembrance. Now in this they were to instruct their children in successive generations, that the memory of it might be kept up, and a sense of the goodness of God continued, and his name glorified. Maimonides F25 says,

``it is a command to make this known to children, even though they do not ask it, as it is said, "and thou shall show thy son", ( Exodus 13:8 ) . According to the son's knowledge, his father teaches him; how if he is a little one or foolish? he says to him, my son, all of us were servants, as this handmaid, or this servant, in Egypt; and on this night the holy blessed God redeemed us, and brought us into liberty: and if the son is grown up, and a wise man, he makes known to him what happened to us in Egypt, and the wonders which were done for us by the hand of Moses our master, all according to the capacity of his son; and it is necessary to make a repetition on this night, that the children may see, and ask, and say, how different is this night from all other nights! until he replies and says to them, so and so it happened, and thus and thus it was:''
and the people bowed the head and worshipped;
signifying the deep sense they had of the mercy shown them, their thankfulness for it, and their readiness to observe the ordinance now instituted.
FOOTNOTES:

F25 Hilchot Chametz Umetzah, c. 7. sect. 2, 3.

Exodus 12:27 In-Context

25 And if ye should enter into the land, which the Lord shall give you, as he has spoken, keep this service.
26 And it shall come to pass, if your sons say to you, What is this service?
27 that ye shall say to them, This passover is a sacrifice to the Lord, as he defended the houses of the children of Israel in Egypt, when he smote the Egyptians, but delivered our houses.
28 And the people bowed and worshipped. And the children of Israel departed and did as the Lord commanded Moses and Aaron, so did they.
29 And it came to pass at midnight that the Lord smote all the first-born in the land of Egypt, from the first-born of Pharao that sat on the throne, to the first-born of the captive-maid in the dungeon, and the first-born of all cattle.

The Brenton translation of the Septuagint is in the public domain.