Blessed are the peacemakers: for they shall be called the children of God.
All Commentaries on Matthew 5:9 Go To Matthew 5
John Chrysostom
AD 407
The peacemakers with others are not only those who reconcile enemies, but those who unmindful of wrongs cultivate peace. That peace only is blessed which islodged in the heart, and does not consist only in words. And they who love peace, they are the sons of peace.
Or, if the peacemakers are they who do not contend one with another, but reconcile those that are at strife, they are rightly called the sons of God, seeing this was the chief employment of the Only-begotten Son, to reconcile things separated, to give peace to things at war.