Deuteronomy 13:15

¹³ that wicked men have arisen from among you and have led the people of their city astray, saying, “Let us go and serve other gods” (which you have not known),

¹⁴ then you must inquire, investigate, and interrogate thoroughly. And if it is established with certainty that this abomination has been committed among you,

you must surely put the inhabitants of that city to the sword. Devote to destruction all its people and livestock.

¹⁶ And you are to gather all its plunder in the middle of the public square, and completely burn the city and all its plunder as a whole burnt offering to the LORD your God. The city must remain a mound of ruins forever, never to be rebuilt.

¹⁷ Nothing devoted to destruction shall cling to your hands, so that the LORD will turn from His fierce anger, grant you mercy, show you compassion, and multiply you as He swore to your fathers,

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: you must surely put the inhabitants of that city to the sword. Devote to destruction all its people and livestock.
KJV: Thou shalt surely smite the inhabitants of that city with the edge of the sword, destroying it utterly, and all that is therein, and the cattle thereof, with the edge of the sword.
WEB: you shall surely strike the inhabitants of that city with the edge of the sword, destroying it utterly, with all that is therein and its livestock, with the edge of the sword.
ASV: thou shalt surely smite the inhabitants of that city with the edge of the sword, destroying it utterly, and all that is therein and the cattle thereof, with the edge of the sword.
DARBY: thou shalt surely smite the inhabitants of that city with the edge of the sword, devoting it to destruction, and all that is therein, and the cattle thereof, with the edge of the sword.
BLB: you must surely strike those dwelling in that city with the mouth of the sword, utterly destroying it and all that is in it, and its livestock, with the mouth of the sword.

ÅB: da skal du slå innbyggerne i denne by ihjel med sverdets egg; du skal bannlyse den og alt det som i den er; også feet der skal du slå med sverdets egg.
OTB: må du sannelig legge alle som bor i den byen under sverdet. Ødelegg den fullstendig, både dens folk og dens buskap.
B1930: da skal du slå innbyggerne i denne by ihjel med sverdets egg; du skal bannlyse den og alt det som i den er; også feet der skal du slå med sverdets egg.

Study notes (Tyndale)

Original text and word study

Cross references

Exodus 22:20
If anyone sacrifices to any god other than the LORD alone, he must be set apart for destruction.
Read in context
Leviticus 27:28
Nothing that a man sets apart to the LORD from all he owns—whether a man, an animal, or his inherited land—can be sold or redeemed; everything so devoted is most holy to the LORD.
Read in context
Deuteronomy 7:2
and when the LORD your God has delivered them over to you to defeat them, then you must devote them to complete destruction. Make no treaty with them and show them no mercy.
Read in context
Deuteronomy 7:16
You must destroy all the peoples the LORD your God will deliver to you. Do not look on them with pity. Do not worship their gods, for that will be a snare to you.
Read in context
Joshua 6:24
Then the Israelites burned up the city and everything in it. However, they put the silver and gold and articles of bronze and iron into the treasury of the LORD’s house.
Read in context
Revelation 17:16
And the ten horns and the beast that you saw will hate the prostitute. They will leave her desolate and naked, and will eat her flesh and burn her with fire.
Read in context
Revelation 18:18–24
and cry out at the sight of the smoke rising from the fire that consumes her. “What city was ever like this great city?” they will exclaim.
Read in context
Exodus 23:24
You must not bow down to their gods or serve them or follow their practices. Instead, you are to demolish them and smash their sacred stones to pieces.
Read in context