The King's Mirror (Psalm 101)

Psalm 101 (NASB)
I will sing of mercy and justice;
To You, Lord, I will sing praises.
2 I will carefully attend to the blameless way.
When will You come to me?
I will walk within my house in the integrity of my heart.
3 I will set no worthless thing before my eyes;
I hate the work of those who fall away;
It shall not cling to me.
4 A perverse heart shall leave me;
I will know no evil.
5 Whoever secretly slanders his neighbor, him I will destroy;
I will not endure one who has a haughty look and an arrogant heart.