Deuteronomy 3:6

We utterly destroyed them, as we did to Sihon king of Heshbon, utterly destroying every inhabited city, with the women and the little ones.

Deuteronomy 2:34

We took all his cities at that time, and utterly destroyed every inhabited city, with the women and the little ones; we left none remaining:

Deuteronomy 2:24

"Rise up, take your journey, and pass over the valley of the Arnon: behold, I have given into your hand Sihon the Amorite, king of Heshbon, and his land; begin to possess it, and contend with him in battle.

Psalm 135:10-12

who struck many nations, and killed mighty kings,

Leviticus 27:28-29

"'Notwithstanding, no devoted thing, that a man shall devote to the LORD of all that he has, whether of man or animal, or of the field of his possession, shall be sold or redeemed: every devoted thing is most holy to the LORD.

Numbers 21:2

Israel vowed a vow to the LORD, and said, "If you will indeed deliver this people into my hand, then I will utterly destroy their cities."

Deuteronomy 3:2

The LORD said to me, "Do not fear him; for I have delivered him, and all his people, and his land, into your hand; and you shall do to him as you did to Sihon king of the Amorites, who lived at Heshbon."

Deuteronomy 20:16-18

But of the cities of these peoples, that the LORD your God gives you for an inheritance, you shall save alive nothing that breathes;

Joshua 11:14

The children of Israel took all the spoil of these cities, with the livestock, as spoils for themselves; but every man they struck with the edge of the sword, until they had destroyed them. They did not leave any who breathed.

Psalm 136:19-21

Sihon king of the Amorites; for his loving kindness endures forever;

Treasury of Scripture Knowledge

Summary

And we utterly destroyed them, as we did unto Sihon king of Heshbon, utterly destroying the men, women, and children, of every city.

Bible References

We utterly

Deuteronomy 2:34
We took all his cities at that time, and utterly destroyed every inhabited city, with the women and the little ones; we left none remaining:
Deuteronomy 20:16
But of the cities of these peoples, that the LORD your God gives you for an inheritance, you shall save alive nothing that breathes;
Leviticus 27:28
"'Notwithstanding, no devoted thing, that a man shall devote to the LORD of all that he has, whether of man or animal, or of the field of his possession, shall be sold or redeemed: every devoted thing is most holy to the LORD.
Numbers 21:2
Israel vowed a vow to the LORD, and said, "If you will indeed deliver this people into my hand, then I will utterly destroy their cities."
Joshua 11:14
The children of Israel took all the spoil of these cities, with the livestock, as spoils for themselves; but every man they struck with the edge of the sword, until they had destroyed them. They did not leave any who breathed.

As we did

Deuteronomy 3:2
The LORD said to me, "Do not fear him; for I have delivered him, and all his people, and his land, into your hand; and you shall do to him as you did to Sihon king of the Amorites, who lived at Heshbon."
Deuteronomy 2:24
"Rise up, take your journey, and pass over the valley of the Arnon: behold, I have given into your hand Sihon the Amorite, king of Heshbon, and his land; begin to possess it, and contend with him in battle.
Psalm 135:10
who struck many nations, and killed mighty kings,
Psalm 136:19
Sihon king of the Amorites; for his loving kindness endures forever;