“Blessed are the peacemakers: for they shall be called the children of God.”
Matthew 5:9 — Greek Interlinear
Church Fathers on Matthew 5:9
When you have made your inward parts clean from every spot of sin, that dissentions and contentions may not proceed from your temper, begin peace within yourself, that so you may extend it to others.
Peace is the fixedness of order; by order, I mean an arrangement of things like and unlike giving to each its own place. And as there is no man who would not willingly have joy, so is there no man who would not have peace; since even those who go to war desire nothing more than by war to come to a glorious peace.
The peacemakers [margin note: pacifici] are pronounced blessed, they namely who make peace first within their own hearts, then between brethren at variance. For what avails it to make peace between others, while in your own heart are wars of rebellious vices.