Job 27:7
"Let mine enemy be as the wicked, and he that riseth up against me as the unrighteous."
One of the most difficult situations to deal with in life is personal attacks. I have found that when others do wrong they will go to any measure, including personal attacks, to get what they want. I watched a political operative during an election cycle say that anything is on the table as long as they won. When you're an honest person, it is hard to understand why people will lower themselves to the lowest degree in their personal attacks.