Proverbs 16:13

Righteous lips are the delight of kings. They value one who speaks the truth.

Proverbs 14:35

The king's favor is toward a servant who deals wisely, but his wrath is toward one who causes shame.

Proverbs 22:11

He who loves purity of heart and speaks gracefully is the king's friend.

Psalm 101:5-7

I will silence whoever secretly slanders his neighbor. I won't tolerate one who is haughty and conceited.

Treasury of Scripture Knowledge

Summary

Righteous lips are the delight of kings; and they love him that speaketh right.

Bible References

General references

Proverbs 14:35
The king's favor is toward a servant who deals wisely, but his wrath is toward one who causes shame.
Proverbs 22:11
He who loves purity of heart and speaks gracefully is the king's friend.
Psalm 101:5
I will silence whoever secretly slanders his neighbor. I won't tolerate one who is haughty and conceited.