The "red letter" nonsense.

"The unity of Scripture also means we should be rid, once and for all, of this “red letter” nonsense, as if the words of Jesus are the really important verses in Scripture and carry more authority and are somehow more directly divine than other verses." 

  -- Kevin DeYoung, Taking God At His Word, Kindle edition, Loc 1441

Thank you, Kevin DeYoung, for saying this.