2 Peter 2:6

and turning the cities of Sodom and Gomorrah into ashes, condemned them to destruction, having made them an example to those who would live ungodly;

Jude 1:7

Even as Sodom and Gomorrah, and the cities around them, having, in the same way as these, given themselves over to sexual immorality and gone after strange flesh, are set forth as an example, suffering the punishment of eternal fire.

Numbers 26:10

and the earth opened its mouth, and swallowed them up together with Korah, when that company died; what time the fire devoured two hundred fifty men, and they became a sign.

Deuteronomy 29:23

[and that] the whole land of it is sulfur, and salt, [and] a burning, [that] it is not sown, nor bears, nor any grass grows therein, like the overthrow of Sodom and Gomorrah, Admah and Zeboiim, which Yahweh overthrew in his anger, and in his wrath:

Genesis 19:24-25

Then Yahweh rained on Sodom and on Gomorrah sulfur and fire from Yahweh out of the sky.

Luke 17:28-30

Likewise, even as it happened in the days of Lot: they ate, they drank, they bought, they sold, they planted, they built;

Genesis 19:28

He looked toward Sodom and Gomorrah, and toward all the land of the plain, and looked, and saw that the smoke of the land went up as the smoke of a furnace.

Isaiah 13:19

Babylon, the glory of kingdoms, the beauty of the Chaldeans' pride, will be like when God overthrew Sodom and Gomorrah.

Jeremiah 50:40

As when God overthrew Sodom and Gomorrah and the neighbor cities of it, says Yahweh, so shall no man dwell there, neither shall any son of man live therein.

Ezekiel 16:49-56

Behold, this was the iniquity of your sister Sodom: pride, fullness of bread, and prosperous ease was in her and in her daughters; neither did she strengthen the hand of the poor and needy.

Hosea 11:8

"How can I give you up, Ephraim? How can I hand you over, Israel? How can I make you like Admah? How can I make you like Zeboiim? My heart is turned within me, my compassion is aroused.

Amos 4:11

"I have overthrown some of you, as when God overthrew Sodom and Gomorrah, and you were like a burning stick plucked out of the fire; yet you haven't returned to me," says Yahweh.

Zephaniah 2:9

Therefore as I live, says Yahweh of Armies, the God of Israel, surely Moab will be as Sodom, and the children of Ammon as Gomorrah, a possession of nettles, and salt pits, and a perpetual desolation. The remnant of my people will plunder them, and the survivors of my nation will inherit them.

1 Corinthians 10:11

Now all these things happened to them by way of example, and they were written for our admonition, on whom the ends of the ages have come.

Jude 1:15

to execute judgment on all, and to convict all the ungodly of all their works of ungodliness which they have done in an ungodly way, and of all the hard things which ungodly sinners have spoken against him."

Treasury of Scripture Knowledge

Summary

And turning the cities of Sodom and Gomorrha into ashes condemned them with an overthrow, making them an ensample unto those that after should live ungodly;

Bible References

Turning

Genesis 19:24
Then Yahweh rained on Sodom and on Gomorrah sulfur and fire from Yahweh out of the sky.
Deuteronomy 29:23
[and that] the whole land of it is sulfur, and salt, [and] a burning, [that] it is not sown, nor bears, nor any grass grows therein, like the overthrow of Sodom and Gomorrah, Admah and Zeboiim, which Yahweh overthrew in his anger, and in his wrath:
Isaiah 13:19
Babylon, the glory of kingdoms, the beauty of the Chaldeans' pride, will be like when God overthrew Sodom and Gomorrah.
Jeremiah 50:40
As when God overthrew Sodom and Gomorrah and the neighbor cities of it, says Yahweh, so shall no man dwell there, neither shall any son of man live therein.
Ezekiel 16:49
Behold, this was the iniquity of your sister Sodom: pride, fullness of bread, and prosperous ease was in her and in her daughters; neither did she strengthen the hand of the poor and needy.
Hosea 11:8
"How can I give you up, Ephraim? How can I hand you over, Israel? How can I make you like Admah? How can I make you like Zeboiim? My heart is turned within me, my compassion is aroused.
Amos 4:11
"I have overthrown some of you, as when God overthrew Sodom and Gomorrah, and you were like a burning stick plucked out of the fire; yet you haven't returned to me," says Yahweh.
Zephaniah 2:9
Therefore as I live, says Yahweh of Armies, the God of Israel, surely Moab will be as Sodom, and the children of Ammon as Gomorrah, a possession of nettles, and salt pits, and a perpetual desolation. The remnant of my people will plunder them, and the survivors of my nation will inherit them.
Luke 17:28
Likewise, even as it happened in the days of Lot: they ate, they drank, they bought, they sold, they planted, they built;
Jude 1:7
Even as Sodom and Gomorrah, and the cities around them, having, in the same way as these, given themselves over to sexual immorality and gone after strange flesh, are set forth as an example, suffering the punishment of eternal fire.

Making

Numbers 26:10
and the earth opened its mouth, and swallowed them up together with Korah, when that company died; what time the fire devoured two hundred fifty men, and they became a sign.
Deuteronomy 29:23
[and that] the whole land of it is sulfur, and salt, [and] a burning, [that] it is not sown, nor bears, nor any grass grows therein, like the overthrow of Sodom and Gomorrah, Admah and Zeboiim, which Yahweh overthrew in his anger, and in his wrath:
1 Corinthians 10:11
Now all these things happened to them by way of example, and they were written for our admonition, on whom the ends of the ages have come.

General references

Joshua 22:20
Didn't Achan the son of Zerah commit a trespass in the devoted thing, and wrath fell on all the congregation of Israel? That man didn't perish alone in his iniquity.'"
Jeremiah 50:40
As when God overthrew Sodom and Gomorrah and the neighbor cities of it, says Yahweh, so shall no man dwell there, neither shall any son of man live therein.
Luke 17:29
but in the day that Lot went out from Sodom, it rained fire and sulfur from the sky, and destroyed them all.
Luke 19:40
He answered them, "I tell you that if these were silent, the stones would cry out."