Psalm 5:7 Destroy the wicked

“תְּאַבֵּד דֹּבְרֵי כָזָב אִישׁ דָּמִים וּמִרְמָה יְתָעֵב יְהֹוָה”

“You destroy speakers of lies; the Lord abhors a man of blood and deceit.”

David asks HaShem to destroy all the hated wicked.

It raises a question about King David’s personality.
Absalom, Saul, Shimee and others, many cases in which we have seen King David as forgiving person.His request now, of destroying the wicked is not the David we accustomed to know in the stories that appear in the Bible.

The general difference of David’s behavior between the cases, seems to be whether it was “family” or someone “outside of the family”.

Whenever evil deed is done by Israeli people, David is closer to forgive, even turning a blind eye..
When the case is of someone else that is ‘a man of blood and deceit’, David asks HaShem to act in a strictly justice manner. “You destroy speakers of lies”.

Question: Doesn’t it encourage favoritism? 

Answer: In short: I would be disappointed if you treated the same way, your child / sister, as you treated a neighbor who harmed you.  We won’t encourage favoritism always, but beside the natural part of it, there is also moral room for it.