Exegesis of the Blood of the Lamb in Exodus 12:13

Exodus 12:13 describes the role of the blood of the Passover lamb in the protection of the Israelites during the tenth plague: "And the blood will be a sign on the houses where you are: when I see the blood I will go over you, and no evil will come on you for your destruction, when my hand is on the land of Egypt" (BBE) ^[1]. This verse is central to understanding the Passover institution, which is one of the most significant ordinances in the Old Testament and frequently referenced in the New Testament ^[4].

The immediate context of Exodus 12 is the institution of the Passover, commanded by God to Moses and Aaron before the final plague upon Egypt. The Israelites were instructed to select a lamb or kid on the tenth day of the month, a male of the first year and without blemish ^[7]. This animal was to be killed on the fourteenth day, and its blood was to be applied to the two side posts and the lintel of their doors ^{[7, 1]}. This act of applying the blood was a crucial part of the ordinance, serving as a sign for the Lord to "pass over" the houses of the Israelites, sparing their firstborn from the destruction that would befall the Egyptians ^{[1, 4]}. The flesh of the lamb was then to be roasted and eaten with unleavened bread and bitter herbs ^[7].

The phrase "when I see the blood I will go over you" highlights the protective power attributed to the blood ^[1]. The Hebrew word for "pass over" (פסח, pasach) implies a skipping or sparing, rather than merely passing by ^[1]. The application of the blood was to be done by dipping a bunch of hyssop into the blood and sprinkling it on the doorposts ^[5]. It is notable that no blood was to be sprinkled on the threshold, which some interpreters suggest teaches a reverent regard for the blood ^[5].

Theological interpretations of the blood of the lamb in Exodus 12:13 often connect it to the concept of atonement and redemption. The Midrash Rabbah states that the blood of the paschal offering would atone for the Israelites, signifying that God was redeemed with them, as it says, "Whom You redeemed from Egypt, the nation and its God" (II Samuel 7:23) ^[11]. This suggests a reciprocal relationship where God's redemption of Israel is also, in a sense, His own.

Christian theology frequently views the Paschal Lamb and its blood as a type of Christ and his atoning sacrifice. Charles Hodge, in his Systematic Theology, emphasizes that the Old Testament continually supports the teachings concerning Christ's person and work, including the sacrificial nature of his death ^[9]. The Paschal Lamb is seen as a type of Christ, who is described as "a male of the first year," "without blemish," "taken out of the flock," and "killed by the people" ^[2]. Adam Clarke explicitly states that the sprinkling of the blood of the paschal lamb was an emblem of the sacrifice and atonement made by the death of Jesus Christ, citing passages such as 1 Peter 1:2, Hebrews 9:13-14, and Hebrews 8:10 ^[5]. The idea of the innocent bearing the guilt and enduring the penalty in the stead of others is central to this understanding of Christ's work ^[6].

Thomas Aquinas, in his Summa Theologica, discusses the Paschal Lamb in relation to the sacrament of the Eucharist. He considers the Paschal Lamb to be a significant figure of the Eucharist, particularly in relation to Christ's true body, which is both reality and sacrament ^[10]. While the oblation of Melchisedech is considered the chief figure for the bread and wine, the Paschal Lamb prefigures the sacrificial aspect of Christ's body ^[10]. The ceremonial precepts of the Old Law, including the Passover, had a role in addressing both spiritual and corporal uncleanness, though they did not have the power of justification in the same way as the New Covenant ^[8].

The command to observe the Passover annually, as mentioned in Exodus 12:11, reinforced the memory of this deliverance and the significance of the blood ^[3]. The institution of the Passover, with the blood as a sign of protection, thus laid a foundational understanding of salvation through substitutionary sacrifice that would later be reinterpreted and fulfilled in Christian thought ^{[5, 9]}.

Sources

Exodus “Exodus 12:13 (BBE) — And the blood will be a sign on the houses where you are: when I see the blood I will go over you, and no evil will come on you for your destruction, when my hand is on the land of Egypt.”
Torrey's Topical Textbook “Torrey's Topical Textbook: Paschal Lamb, Typical Nature Of — A type of Christ -- Ex 12:3; 1Co 5:7. A male of the first year -- Ex 12:5; Isa 9:6. Without blemish -- Ex 12:5; 1Pe 1:19. Taken out of the flock -- Ex 12:5; Heb 2:14,17. Chosen before-hand -- Ex 12:3; 1Pe 2:4. Shut up four days that it might be closely examined -- Ex 12:6; Joh 8:46; 18:38. Killed by the people -- Ex 12:6; Ac 2:23. Killed at the place where the Lord put his name -- De 16:2,5-7; 2Ch 35:1; Lu 13:33. Killed in the evening -- Ex 12:6; Mr 15:34,37. Its blood to be shed -- Ex 12:7; Lu 22:20. Blood of, sprinkled on lintel an”
Treasury of Scripture Knowledge “Exodus 12:11 cross-references: Exodus 12:13, Exodus 12:21, Exodus 12:27, Exodus 12:43, Leviticus 23:5, Numbers 9:1, Numbers 28:16, Deuteronomy 16:1, Deuteronomy 16:2, Joshua 5:10, 2 Kings 23:21, Ezekiel 45:21, Matthew 26:19, Luke 7:38, Luke 12:35, Luke 15:22, 1 Corinthians 5:7, Ephesians 6:15, 1 Peter 1:13”
Exodus (Nonconformist/Puritan) “Matthew Henry on Exodus 12 (introduction): This chapter gives an account of one of the most memorable ordinances, and one of the most memorable providences, of all that are recorded in the Old Testament. I. Not one of all the ordinances of the Jewish church was more eminent than that of the passover, nor is any one more frequently mentioned in the New Testament; and we have here an account of the institution to it. The ordinance consisted of three parts: - 1. The killing and eating of the paschal lamb (Exo 12:1-6, Exo 12:8-11). 2. The sprinkling of the blood upon the door-posts, spoken of as a”
Exodus (Methodist/Wesleyan) “Adam Clarke on Exodus 12:7: Take of the blood, and strike it on the two side posts - This was to be done by dipping a bunch of hyssop into the blood, and thus sprinkling it upon the posts, etc.; see Exo 12:22. That this sprinkling of the blood of the paschal lamb was an emblem of the sacrifice and atonement made by the death of Jesus Christ, is most clearly intimated in the sacred writings, Pe1 1:2; Heb 9:13, Heb 9:14; Heb 8:10. It is remarkable that no blood was to be sprinkled on the threshold, to teach, as Mr. Ainsworth properly observes, a reverent regard for the blood of Christ, that men ”
CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 2, section 103: the law. The victim bore the sin of the offerer, and died in his stead. An expiation was thereby effected by the suffering of a vicarious punishment. This also determines the nature of the work of Christ. If He was an offering for sin, if He saves us from the penalty of the law of God, in the same way in which the sin offering saved the Israelite from the penalty of the law of Moses, then He bore the guilt of our sins and endured the penalty in our stead. We may not approve of this method of salvation. The idea of the innocent bearing th”
Exodus (Methodist/Wesleyan) “Adam Clarke on Exodus 12 (introduction): The month Abib is to be considered as the commencement of the year, Exo 12:1, Exo 12:2. The Passover instituted; the lamb or kid to be used on the occasion to be taken from the flock the tenth day of the month, and each family to provide one, Exo 12:3, Exo 12:4. The lamb or kid to be a male of the first year without blemish, Exo 12:5. To be killed on the fourteenth day, Exo 12:6, and the blood to be sprinkled on the side posts and lintels of the doors, Exo 12:7. The flesh to be prepared by roasting, and not to be eaten either sodden or raw, Exo 12:8, Ex”
theology (Catholic (Scholastic)) “Aquinas, Summa Theologica, First Part of the Second Part (Prima Secundae), Of the Duration of the Ceremonial Precepts, Art. 2: Article: Whether, at the time of the Law, the ceremonies of the Old Law had any power of justification? I answer that, As stated above (Question [102], Article [5], ad 4), a twofold uncleanness was distinguished in the Old Law. One was spiritual and is the uncleanness of sin. The other was corporal, which rendered a man unfit for divine worship; thus a leper, or anyone that touched carrion, was said to be unclean: and thus uncleanness was nothing but a kind of irregula”
CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 2, section 74: that Jesus was the Christ, but they referred to them continually in support of everything which they taught concerning his person and his work. It is from the Old Testament they prove his divinity; his incarnation; the sacrificial nature of his death; that He was truly a Priest to make reconciliation for the people, as well as a Prophet and a King; and that He was to die, to rise again on the third day, to ascend into heaven, and to be invested with absolute authority over all the earth, and aver all orders of created beings. There is not”
theology (Catholic (Scholastic)) “Aquinas, Summa Theologica, Third Part (Tertia Pars), Of the Sacrament of the Eucharist, Art. 6: Article: Whether the Paschal Lamb was the chief figure of this sacrament? I answer that, We can consider three things in this sacrament: namely, that which is sacrament only, and this is the bread and wine; that which is both reality and sacrament, to wit, Christ's true body; and lastly that which is reality only, namely, the effect of this sacrament. Consequently, in relation to what is sacrament only, the chief figure of this sacrament was the oblation of Melchisedech, who offered up bread and wi”
Midrash Rabbah (Jewish (Rabbinic)) “Midrash Rabbah, Shemot Rabbah 15:12: Another interpretation: “This month shall be for you” – Rabbi Meir says: The redemption is for Me and for you. As it were, I was redeemed with you, as it is stated: “Whom You redeemed from Egypt, the nation and its God” (II Samuel 7:23). Establish this month for Me and for you, as I will see the blood of the paschal offering and it will atone for you, as it is stated: “Speak to the entire congregation of Israel […they shall take for them each man a lamb…a lamb for each household” (Exodus 12:3) – and your rejoicing will be complete, even for one who is poor.”

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