Quotation Recognition

"Blessed are the peacemakers on earth." (Bible or King Henry VI?)

Word challenge:  INTERNECINE (does this apply to war or peace?--see answer at end of post)

I have been researching Nellie Bly, an intrepid "stunt reporter." Look for her story in my collective biography Fearless Females: Women Who Dared to Be Different (when it gets published, that is!)

"Blessed are the peacemakers on earth"--This is a tricky one; it comes from King Henry VI, Part 2 but a very similar quotation can be found in Matthew 5:9: "Blessed are the peacemakers, for they shall be called the children of God."

"Internecine" refers to war because it means mutually destructive; ruinous or fatal on both sides.