1 Corinthians 10:8

We must not indulge in [nor tolerate] sexual immorality, as some of them did, and twenty-three thousand [suddenly] fell [dead] in a single day!

Numbers 25:1-9

Israel settled and remained in Shittim, and the people began to play the prostitute with the women of Moab [by being unfaithful to God].

Run away from sexual immorality [in any form, whether thought or behavior, whether visual or written]. Every other sin that a man commits is outside the body, but the one who is sexually immoral sins against his own body.

Psalm 106:29

Thus they provoked Him to anger with their practices,
And a plague broke out among them.

1 Corinthians 6:9

Do you not know that the unrighteous will not inherit or have any share in the kingdom of God? Do not be deceived; neither the sexually immoral, nor idolaters, nor adulterers, nor effeminate [by perversion], nor those who participate in homosexuality,

Revelation 2:14

But I have a few things against you, because you have there some [among you] who are holding to the [corrupt] teaching of Balaam, who taught Balak to put a stumbling block before the sons of Israel, [enticing them] to eat things that had been sacrificed to idols and to commit [acts of sexual] immorality.

Treasury of Scripture Knowledge did not add

1 Corinthians 10:8