1 Corinthians 15:33

Be not deceived: evil conversations corrupt good manners.

Ephesians 5:11

And have no society with the unfruitful works of darkness, but rather rebuke them.

Titus 1:15

All things indeed are clean to the clean: but to the defiled and to the unbelievers there is nothing clean; but their very mind and conscience are defiled.

Treasury of Scripture Knowledge

Summary

Every bed, whereon he lieth that hath the issue, is unclean: and every thing, whereon he sitteth, shall be unclean.

Bible References

Be unclean

1 Corinthians 15:33
Be not deceived: evil conversations corrupt good manners.
Ephesians 5:11
And have no society with the unfruitful works of darkness, but rather rebuke them.
Titus 1:15
All things indeed are clean to the clean: but to the defiled and to the unbelievers there is nothing clean; but their very mind and conscience are defiled.