1 Corinthians 6:18
Shun immorality! Any other sin that a man commits is outside the body, but the immoral man sins against his body.
1 Corinthians 15:33
Make no mistake about this: 'bad company is the ruin of good character.'
1 Thessalonians 5:22
and abstaining from whatever kind is evil.
1 Timothy 5:14
So I prefer young widows to marry again, to bear children, to look after their households, and not to afford our opponents any chance of reviling us.
2 Timothy 2:22
So shun the lusts of youth and aim at integrity, faith, love and peace, in the company of those who invoke the Lord out of a pure heart.
1 Peter 2:11
Beloved, as sojourners and exiles I appeal to you to abstain from the passions of the flesh that wage war upon the soul.