What Is the Blood of the Covenant? What Happened in Exodus 24?

February 25, 2026·5 min read·19 scripture refs
What Is the Blood of the Covenant? What Happened in Exodus 24?

In Exodus 24, Moses takes blood from sacrificed animals and sprinkles it on the altar and on the people of Israel. He declares, “Behold the blood of the covenant that the LORD has made with you” (Exodus 24:8, ESV). This moment formally seals the Sinai covenant and deepens the theology of blood that has unfolded from Eden to Passover.

As we have seen in our cornerstone study, The Blood in Scripture, substitution, covenant promise, and deliverance progressively develop through redemptive history. In Exodus 24, blood becomes the official seal of covenant relationship between God and His redeemed people.


Direct Answer: What Is the Blood of the Covenant?

  • It was sacrificial blood used to ratify God’s covenant with Israel (Exodus 24:5–8).
  • It symbolized life given and binding commitment.
  • It united altar and people under one covenant relationship.
  • It foreshadowed Christ’s declaration of the new covenant in His blood (Luke 22:20).
  • It established mediation through a representative.
Covenant is not sealed with words alone.
It is sealed with blood.

What Led to Exodus 24?

Israel had already experienced deliverance through the Passover lamb (Exodus 12). They had crossed the Red Sea. They had arrived at Mount Sinai.

Exodus 19 records God’s covenant intention:

“You shall be my treasured possession among all peoples… and you shall be to me a kingdom of priests and a holy nation.” (Exodus 19:5–6, ESV)

The Law is then given in Exodus 20–23. But law without covenant ratification is incomplete. Exodus 24 records the formal sealing of the relationship.

What Exactly Happened in Exodus 24?

Moses builds an altar and sets up twelve pillars representing the twelve tribes of Israel (Exodus 24:4). Young men offer burnt offerings and sacrifice peace offerings of oxen to the LORD (24:5).

Then comes the decisive act:

“And Moses took half of the blood and put it in basins, and half of the blood he threw against the altar.” (Exodus 24:6, ESV)

After reading the Book of the Covenant aloud, the people respond, “All that the LORD has spoken we will do” (24:7).

Then Moses takes the remaining blood and sprinkles it on the people, declaring:

“Behold the blood of the covenant that the LORD has made with you in accordance with all these words.” (Exodus 24:8, ESV)

Blood touched both altar and people.
God and His covenant community were bound together.

Why Was Blood Required to Seal the Covenant?

Blood represents life (Leviticus 17:11). Covenant involves binding commitment. When blood seals a covenant, it signifies that life stands behind the promise.

The shedding of blood underscored the seriousness of the agreement. Covenant breaking carried consequences.

Yet there is also mercy here. The blood was not the blood of the people. It was sacrificial blood offered in their place.

How Does Mediation Function in Exodus 24?

Moses acts as mediator. He stands between God and the people. He reads the covenant. He handles the blood. He declares the terms.

This mediatorial pattern anticipates Christ. 1 Timothy 2:5 later states, “For there is one God, and there is one mediator between God and men, the man Christ Jesus” (ESV).

The covenant at Sinai required a mediator. So does the New Covenant.

Every covenant requires a mediator.
Every mediator points forward to Christ.

What Is the Significance of Sprinkling?

The act of sprinkling appears repeatedly in the sacrificial system. It symbolized purification, consecration, and covenant inclusion.

Hebrews 9 reflects on this moment:

“For when every commandment of the law had been declared by Moses… he took the blood… and sprinkled both the book itself and all the people.” (Hebrews 9:19, ESV)

Hebrews explicitly connects Exodus 24 to Christ’s redemptive work.

How Does This Connect to the New Covenant?

On the night before His crucifixion, Jesus took the cup and declared:

“This cup that is poured out for you is the new covenant in my blood.” (Luke 22:20, ESV)

Jesus intentionally echoes Exodus 24 language. Just as Moses declared, “Behold the blood of the covenant,” Jesus identifies His own blood as covenant-establishing.

The Sinai covenant was sealed with animal blood. The New Covenant is sealed with Christ’s blood.

The old covenant was inaugurated with oxen’s blood.
The new covenant was inaugurated with the Son’s blood.

How Does This Advance Blood Theology?

The development continues:

The pattern is deepening. Blood is not incidental. It is covenantal.

Why Does This Matter for Believers Today?

Exodus 24 teaches that covenant relationship with God is not casual. It is grounded in sacrificial provision.

Believers today stand not under the Sinai covenant, but under the New Covenant sealed by Christ’s blood. Yet the principle remains: relationship with God is secured by life given.

Hebrews 12:24 speaks of “the sprinkled blood that speaks a better word than the blood of Abel” (ESV). The blood of Christ secures not temporary covenant membership, but eternal redemption.

Covenant with God is never sealed by human effort.
It is sealed by divinely provided blood.

Frequently Asked Questions

Was the Sinai covenant unconditional like Abraham’s?

The Abrahamic covenant was grounded in promise. The Sinai covenant involved conditional obedience under the Law. Both, however, were sealed with blood.

Why did Moses sprinkle the people?

The sprinkling symbolized inclusion within the covenant and purification through sacrificial blood.

How is Christ superior to Moses as mediator?

Moses mediated a covenant sealed with animal blood. Christ mediates a better covenant sealed with His own blood (Hebrews 8–9).

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In the love of Christ.
Barry