2 Peter 2:6

and having reduced to ashes the cities of Sodom and Gomorrah, punished them with an overthrow, making them an example to those who should afterward live ungodly:

2 Peter 2:9

the Lord knows how to rescue the godly out of temptation, and to reserve the unrighteous to a day of judgment to be punished;

2 Peter 3:7

But the present heavens and the earth, by the same word are treasured up, being kept for fire to a day of judgment, and destruction of ungodly men.

1 John 4:17

By this, the love has been perfected in us, that we may have boldness in the day of judgment; because as he is, so are we in this world.

Jude 1:7

Likewise Sodom and Gomorrah, and the cities around them, which, after their example, had habitually committed uncleanness, and gone after other flesh, are set forth an example, suffering the punishment of an eternal fire.

Treasury of Scripture Knowledge

Summary

And whosoever shall not receive you, nor hear you, when ye depart thence, shake off the dust under your feet for a testimony against them. Verily I say unto you, It shall be more tolerable for Sodom and Gomorrha in the day of judgment, than for that city.

Bible References

It shall

2 Peter 2:6
and having reduced to ashes the cities of Sodom and Gomorrah, punished them with an overthrow, making them an example to those who should afterward live ungodly:
Jude 1:7
Likewise Sodom and Gomorrah, and the cities around them, which, after their example, had habitually committed uncleanness, and gone after other flesh, are set forth an example, suffering the punishment of an eternal fire.

In the day

2 Peter 2:9
the Lord knows how to rescue the godly out of temptation, and to reserve the unrighteous to a day of judgment to be punished;
2 Peter 3:7
But the present heavens and the earth, by the same word are treasured up, being kept for fire to a day of judgment, and destruction of ungodly men.
1 John 4:17
By this, the love has been perfected in us, that we may have boldness in the day of judgment; because as he is, so are we in this world.