Deuteronomy 3:6

And we devoted them to destruction, doing unto them as we did unto Sihon king of Heshbon, - devoting to destruction every city of males, the women, and the little ones.

Deuteronomy 2:34

And we captured all his cities, at that time, and devoted to destruction every city of males, with the women and the little ones, - we left not remaining a survivor:

Deuteronomy 2:24

Arise ye, set forward and cross over the ravine of Arnon, see! I have given into thy hand - Sihon king of Heshbon, the Amorite and his land, begin - take possession, - and engage in strife with him in battle.

Psalm 135:10-12

Who smote great nations, and slew mighty kings:

Leviticus 27:28-29

Only no devoted thing which any man shall devote unto Yahweh, of all that belongeth to him, - of man or beast, or of the field of his possession, shall be either sold or redeemed, - as to every devoted thing, most holy, it is unto Yahweh.

Numbers 21:2

Then Israel vowed vow unto Yahweh, and said, - If thou wilt, surely deliver up, this people into my band, then will I utterly destroy their cities.

Deuteronomy 3:2

And Yahweh said unto me: Do not fear him, for into thy hand, have I delivered him and all his people and his land, - so then thou shalt do unto him, as thou didst unto Sihon king of the Amorites who was dwelling in Heshbon.

Deuteronomy 20:16-18

But of the cities of these peoples which Yahweh thy God is giving unto thee as an inheritance, shalt thou not save alive, any breathing thing.

Joshua 11:14

But, all the spoil of these cities, and the cattle, did the sons of Israel take as their prey, - nevertheless, all the human beings, smote they with the edge of the sword, until they had destroyed them, they left remaining no breathing thing.

Psalm 136:19-21

Even Sihon, king of the Amorites, For, age-abiding, is his lovingkindness.

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
And we captured all his cities, at that time, and devoted to destruction every city of males, with the women and the little ones, - we left not remaining a survivor:
Deuteronomy 20:16
But of the cities of these peoples which Yahweh thy God is giving unto thee as an inheritance, shalt thou not save alive, any breathing thing.
Leviticus 27:28
Only no devoted thing which any man shall devote unto Yahweh, of all that belongeth to him, - of man or beast, or of the field of his possession, shall be either sold or redeemed, - as to every devoted thing, most holy, it is unto Yahweh.
Numbers 21:2
Then Israel vowed vow unto Yahweh, and said, - If thou wilt, surely deliver up, this people into my band, then will I utterly destroy their cities.
Joshua 11:14
But, all the spoil of these cities, and the cattle, did the sons of Israel take as their prey, - nevertheless, all the human beings, smote they with the edge of the sword, until they had destroyed them, they left remaining no breathing thing.

As we did

Deuteronomy 3:2
And Yahweh said unto me: Do not fear him, for into thy hand, have I delivered him and all his people and his land, - so then thou shalt do unto him, as thou didst unto Sihon king of the Amorites who was dwelling in Heshbon.
Deuteronomy 2:24
Arise ye, set forward and cross over the ravine of Arnon, see! I have given into thy hand - Sihon king of Heshbon, the Amorite and his land, begin - take possession, - and engage in strife with him in battle.
Psalm 135:10
Who smote great nations, and slew mighty kings:
Psalm 136:19
Even Sihon, king of the Amorites, For, age-abiding, is his lovingkindness.