Numbers21

Numbers chapter 21 recounts Israel's initial victory over King Arad of the Canaanites, fulfilling a vow to utterly destroy them at a place called Hormah. Following this, the people grew discouraged during their journey around Edom, murmuring against God and Moses, which led to the LORD sending fiery serpents among them. Many died, but upon repentance, God commanded Moses to make a brazen serpent; those who looked upon it lived. The chapter then details Israel's continued journey, culminating in their decisive victories over Sihon, king of the Amorites, and Og, king of Bashan, securing their lands east of the Jordan River.
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Israel Defeats King Arad

1
When the Canaanite king of Arad, who lived in the Negev, heard that Israel was coming along the road to Atharim, he attacked Israel and captured some prisoners. ​
2
So Israel made a vow to the LORD: “If You will deliver this people into our hands, we will devote their cities to destruction.” ​
3
And the LORD heard Israel’s plea and delivered up the Canaanites. Israel devoted them and their cities to destruction; so they named the place Hormah. ​

The Plague of Fiery Serpents

4
Then they set out from Mount Hor along the route to the Red Sea, in order to bypass the land of Edom. But the people grew impatient on the journey ​
5
and spoke against God and against Moses: “Why have you led us up out of Egypt to die in the wilderness? There is no bread or water, and we detest this wretched food!” ​
6
So the LORD sent venomous snakes among the people, and many of the Israelites were bitten and died. ​
7
Then the people came to Moses and said, “We have sinned by speaking against the LORD and against you. Intercede with the LORD so He will take the snakes away from us.” So Moses interceded for the people.
8
Then the LORD said to Moses, “Make a fiery serpent and mount it on a pole. When anyone who is bitten looks at it, he will live.” ​
9
So Moses made a bronze snake and mounted it on a pole. If anyone who was bitten looked at the bronze snake, he would live. ​

Israel's Journey Continues

10
Then the Israelites set out and camped at Oboth.
11
They journeyed from Oboth and camped at Iye-abarim in the wilderness opposite Moab to the east.
12
From there they set out and camped in the Valley of Zered.
13
From there they moved on and camped on the other side of the Arnon, in the wilderness that extends into the Amorite territory. Now the Arnon is the border between the Moabites and the Amorites. ​
14
Therefore it is stated in the Book of the Wars of the LORD: “Waheb in Suphah and the wadis of the Arnon, ​
15
even the slopes of the wadis that extend to the site of Ar and lie along the border of Moab.”
16
From there they went on to Beer, the well where the LORD said to Moses, “Gather the people so that I may give them water.” ​
17
Then Israel sang this song: “Spring up, O well, all of you sing to it! ​
18
The princes dug the well; the nobles of the people hollowed it out with their scepters and with their staffs.” From the wilderness the Israelites went on to Mattanah,
19
and from Mattanah to Nahaliel, and from Nahaliel to Bamoth,
20
and from Bamoth to the valley in Moab where the top of Pisgah overlooks the wasteland.

Conquest of Sihon, King of the Amorites

21
Then Israel sent messengers to Sihon king of the Amorites, saying, ​
22
“Let us pass through your land. We will not cut through any field or vineyard, or drink water from any well. We will stay on the King’s Highway until we have passed through your territory.”
23
But Sihon would not let Israel pass through his territory. Instead, he gathered his whole army and went out to confront Israel in the wilderness. When he came to Jahaz, he fought against Israel.
24
And Israel put him to the sword and took possession of his land, from the Arnon to the Jabbok—but only up to the border of the Ammonites, because it was fortified. ​
25
Israel captured all the cities of the Amorites and occupied them, including Heshbon and all its villages.
26
Heshbon was the city of Sihon king of the Amorites, who had fought against the former king of Moab and taken all his land as far as the Arnon. ​
27
That is why the poets say: “Come to Heshbon, let it be rebuilt; let the city of Sihon be restored. ​
28
For a fire went out from Heshbon, a blaze from the city of Sihon. It consumed Ar of Moab, the rulers of Arnon’s heights.
29
Woe to you, O Moab! You are destroyed, O people of Chemosh! He gave up his sons as refugees, and his daughters into captivity to Sihon king of the Amorites.
30
But we have overthrown them; Heshbon is destroyed as far as Dibon. We demolished them as far as Nophah, which reaches to Medeba.”
31
So Israel lived in the land of the Amorites.
32
After Moses had sent spies to Jazer, Israel captured its villages and drove out the Amorites who were there.

Conquest of Og, King of Bashan

33
Then they turned and went up the road to Bashan, and Og king of Bashan and his whole army came out to meet them in battle at Edrei. ​
34
But the LORD said to Moses, “Do not fear him, for I have delivered him into your hand, along with all his people and his land. Do to him as you did to Sihon king of the Amorites, who lived in Heshbon.” ​
35
So they struck down Og, along with his sons and his whole army, until no remnant was left. And they took possession of his land.

Study Notes for Numbers 21

Verse 1

This encounter occurs near the southern border of Canaan, possibly utilizing the route the spies had traveled decades earlier. King Arad’s aggressive action precipitates the conflict.

Verse 2

Israel vowed the 'herem' (utter destruction), dedicating the enemy and their possessions entirely to destruction. This is an early fulfillment of the command to clear the land of hostile Canaanite presence.

Verse 3

The place name 'Hormah' means 'devotion to destruction,' confirming that Israel carried out the specific terms of their vow after the victory granted by the Lord.

Verse 4

Israel was forced to take a long, arduous detour around Edom (Num 20:14-21). The 'discouragement' (Hebrew: *qatsar*) reflects extreme impatience and despair over the difficult journey.

Verse 5

The people’s complaint is rooted in profound ingratitude. Referring to the manna as 'light bread' (worthless or contemptible food) demonstrates a rejection of God's daily, supernatural provision.

Verse 6

The 'fiery serpents' (*seraphim*) were likely venomous snakes whose bites caused intense burning and inflammation. This judgment was a direct consequence of their speaking 'against God' (blasphemy).

Verse 8

The bronze serpent is a paradoxical instrument of salvation: the image of the source of death becomes the means of life. The cure required an act of obedient faith—looking upon the object.

Verse 9

Jesus later referenced this incident (John 3:14–15), comparing the lifting up of the bronze serpent for healing to his own crucifixion, which provides eternal life to those who look to him in faith.

Verse 13

The Arnon River was a crucial geographical marker, serving as the recognized boundary between the territories of Moab and the Amorites.

Verse 14

The 'Book of the Wars of the LORD' is an ancient, non-canonical source, likely a collection of songs or epic narratives celebrating Yahweh's military victories on behalf of Israel.

Verse 16

The name Beer means 'well.' This incident demonstrates that sometimes God provides miraculously, but often He directs His people to use practical means (digging) to access the promised blessing.

Verse 17

This 'Song of the Well' is a rare example of ancient Hebrew folk poetry preserved within the historical narrative, celebrating the community’s joy in finding water.

Verse 21

Israel follows diplomatic protocol, requesting peaceful passage along the main route, similar to the failed request made to Edom (20:17). This establishes that Sihon was the aggressor.

Verse 24

This victory secured the strategically vital Transjordan plateau (from Arnon to Jabbok), a major step toward entering Canaan proper.

Verse 26

This verse provides geopolitical justification for Israel's actions: they were conquering territory previously seized by Sihon from Moab, not violating the boundary of Moab itself (cf. Deut 2:9).

Verse 27

Verses 27–30 quote a taunt song, likely sung by the Amorites after their victory over Moab. The biblical author includes it to confirm the extent of Sihon’s former power, which Israel decisively overcame.

Verse 33

Og ruled the northernmost part of the Transjordan region. His defeat completes Israel's control over the entire plateau east of the Jordan River.

Verse 34

The divine command 'Fear him not' assures Moses that this victory is guaranteed. Og was known for his great size (Deut 3:11), highlighting that God overcomes all human obstacles.

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