Do not invite just anybody into your house for many are clever deceivers.
Like a partridge in its cage acting as a decoy, so is the heart of the proud man; like a spy he watches out for your weaknesses.
He changes good things into evil, he lays his traps and criticizes even the best things.
Just as a spark sets coals on fire, the wicked man prepares his snares in order to draw blood.
Beware of the wicked man for he is planning evil. He might dishonor you forever.
If you take a stranger into your house, he will cause you trouble; he will estrange you from your household.
Sirach 11:29-34