Exodus 9:8-12 Meaning: The Meaning of the Furnace Ashes
8Yahweh said to Moses and to Aaron, “Take handfuls of ashes of the furnace, and let Moses sprinkle it toward the sky in the sight of Pharaoh.
9It shall become small dust over all the land of Egypt, and shall be boils and blisters breaking out on man and on animal, throughout all the land of Egypt.”
10They took ashes of the furnace, and stood before Pharaoh; and Moses sprinkled it up toward the sky; and it became boils and blisters breaking out on man and on animal.
11The magicians couldn’t stand before Moses because of the boils; for the boils were on the magicians and on all the Egyptians.
12Yahweh hardened the heart of Pharaoh, and he didn’t listen to them, as Yahweh had spoken to Moses.
8And the Lord said unto Moses and unto Aaron, Take to you handfuls of ashes of the furnace, and let Moses sprinkle it toward the heaven in the sight of Pharaoh.
9And it shall become small dust in all the land of Egypt, and shall be a boil breaking forth with blains upon man, and upon beast, throughout all the land of Egypt.
10And they took ashes of the furnace, and stood before Pharaoh; and Moses sprinkled it up toward heaven; and it became a boil breaking forth with blains upon man, and upon beast.
11And the magicians could not stand before Moses because of the boils; for the boil was upon the magicians, and upon all the Egyptians.
12And the Lord hardened the heart of Pharaoh, and he hearkened not unto them; as the Lord had spoken unto Moses.
8And Jehovah said unto Moses and unto Aaron, Take to you handfuls of ashes of the furnace, and let Moses sprinkle it toward heaven in the sight of Pharaoh.
9And it shall become small dust over all the land of Egypt, and shall be a boil breaking forth with blains upon man and upon beast, throughout all the land of Egypt.
10And they took ashes of the furnace, and stood before Pharaoh; and Moses sprinkled it up toward heaven; and it became a boil breaking forth with blains upon man and upon beast.
11And the magicians could not stand before Moses because of the boils; for the boils were upon the magicians, and upon all the Egyptians.
12And Jehovah hardened the heart of Pharaoh, and he hearkened not unto them, as Jehovah had spoken unto Moses.
8And Jehovah saith unto Moses and unto Aaron, `Take to you the fulness of your hands of soot of a furnace, and Moses hath sprinkled it towards the heavens, before the eyes of Pharaoh,
9and it hath become small dust over all the land of Egypt, and it hath become on man and on cattle a boil breaking forth with blains, in all the land of Egypt.'
10And they take the soot of the furnace, and stand before Pharaoh, and Moses sprinkleth it towards the heavens, and it is a boil with blains, breaking forth, on man and on beast;
11and the scribes have not been able to stand before Moses, because of the boil, for the boil hath been on the scribes, and on all the Egyptians.
12And Jehovah strengtheneth the heart of Pharaoh, and he hath not hearkened unto them, as Jehovah hath spoken unto Moses.
8And Jehovah said to Moses and to Aaron, Take to yourselves handfuls of ashes of the furnace, and let Moses scatter it toward the heavens before the eyes of Pharaoh.
9And it shall become fine dust over all the land of Egypt, and shall become boils on man and on cattle, breaking out [with] blisters, throughout the land of Egypt.
10And they took ashes of the furnace, and stood before Pharaoh; and Moses sprinkled it toward the heavens; and it became boils [with] blisters breaking out on man and on cattle.
11And the scribes could not stand before Moses because of the boils; for the boils were on the scribes, and on all the Egyptians.
12And Jehovah made Pharaoh's heart stubborn, and he did not hearken to them, as Jehovah had told Moses.
Meaning in one sentence
Why did Moses sprinkle furnace ashes toward heaven, and what do the boils and Pharaoh's hardened heart teach us about judgment?
Context
By the sixth plague, the pattern is clear. Pharaoh has refused again and again to let Israel go. Now the LORD strikes at the Egyptians directly, not their water, not their livestock, but their own bodies. Moses and Aaron take ashes from a furnace, a detail that would not be lost on anyone who knew what those furnaces were used for. The bricks Israel had been forced to make became the source of a painful, humiliating affliction. And the magicians, who had tried to imitate the earlier plagues, are helpless. They cannot even stand. Then comes the familiar refrain: Yahweh strengthened Pharaoh's heart, just as He had said would happen.
Key Words
Three Hebrew words carry the weight of this passage. The first is kivshan, the furnace or kiln used for baking bricks. For the Israelites, those furnaces meant forced labor. That the plague came from their ashes shows a painful irony: the very tools of oppression became the source of judgment on the oppressors.
The second word is zaraq, the verb translated as “sprinkle.” It means to toss or scatter forcefully, not a gentle sprinkling. Moses threw the ashes toward heaven as an act of confrontation, aimed at the sky where Egypt looked for the favor of its gods.
And third, chazaq, “Yahweh hardened Pharaoh’s heart.” This word means to make strong or resolute. It does not suggest that God created evil in Pharaoh, but that He confirmed the direction Pharaoh had already chosen. The same word can describe a city wall being fortified. God strengthened the stubbornness Pharaoh had already set his heart on.
How Christians Read This Verse
Christians from various traditions have seen the furnace ashes as a sign of God's justice. The bricks that had crushed Israel now carried the judgment that humbled Egypt. Many commentators, from Protestant Puritans to Methodists, note the irony: the same source of suffering became the source of punishment. The magicians' helplessness is widely seen as God's triumph over false powers. And the hardening of Pharaoh's heart is understood as a judicial act, not God creating sin but confirming a rebellious will.
A common misunderstanding
A common misreading is that the phrase “Yahweh hardened the heart of Pharaoh” means God forced Pharaoh to sin against his will. In fact, the Hebrew verb chazaq means to strengthen or make firm. Earlier in the story, Pharaoh hardened his own heart repeatedly (Exodus 7:13-14, 8:15, 8:32). Here, God “strengthened” the resolve Pharaoh had already set. This is a sobering truth: when someone persists in rejecting God, He may confirm that choice. The judgment is not God forcing evil but giving a person over to the direction they have already chosen.
Living This Out
This passage asks you to pay attention to your own refusals. Maybe this week you face a decision at work or at home where you keep saying no to what you know is right. That resistance, left unchecked, can become a hardened heart. The furnace ashes say: the things we misuse, our work, our words, our power, can become the source of our pain. The magicians could not stand. Their power failed. Sometimes the humblest acknowledgment of weakness is the wisest move. You do not have to wait until you are covered in boils to admit you need God. Pharaoh waited too long. You haven't.
Main takeaway: The ashes that came from Israel’s suffering became the plague that humbled Egypt, and God’s warnings are meant to soften, not harden, our hearts.
For Families
For ages 5, 8
Moses threw ashes from a fire up to the sky, and it made sore bumps on the people who had been mean to God’s people. God was showing them that He sees everything and He is strong.
For ages 9, 12
God used something that reminded the Egyptians of the hard work they forced on the Israelites: the ashes from a brick furnace. That same furnace became the source of a terrible skin disease. It’s a warning that our actions have consequences, and that God defends those who are treated unfairly. The magicians couldn’t even stand up, all their tricks were useless. Sometimes the best thing we can do is admit God is bigger than we are.
Questions People Ask
Why did Moses use ashes from a furnace?
The furnace represents the brick kilns where the Israelites were forced to labor. Using those ashes for the plague showed that the very tools of oppression became the instruments of judgment. It was a symbolic way of connecting the suffering of Israel with the punishment of Egypt.
What does it mean that God hardened Pharaoh’s heart?
To harden here means to strengthen or make firm. Pharaoh had already hardened his own heart several times (Exodus 7:13-14, 8:15, 8:32). God’s hardening was a judicial act: He confirmed the direction Pharaoh had already chosen. It did not create sin in Pharaoh but gave him over to the rebellion he had freely embraced.
Why couldn’t the magicians stop the boils?
The magicians were themselves afflicted with the boils, so they could not stand before Moses. They had been able to imitate earlier plagues through their secret arts, but this time God’s power was unmistakable. Their defeat showed that the God of Israel was far greater than Egypt’s false gods.
What is the significance of the boils as a plague?
Boils were a painful and humiliating affliction that struck the body directly. This plague showed God’s power over health and disease, something the Egyptians tried to control through their deities like Imhotep, the god of medicine. It also foreshadows the final plague: death itself.
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