Matthew 5:9 Blessed are the peacemakers: for they shall be called the children of God. [kjv]
μακαριοι οι ειρηνοποιοι οτι αυτοι υιοι θεου κληθησονται [gnt]
beati pacifici … vocabuntur [v]
The Greek word translated
"blessed" means
"happy" or
"content".
[Pax Romana, anarchy vs. peace]
Jesus does not say whether being a "peacemaker" is a good or bad idea.
Jesus does not say who will call such a "peacemaker" the "children of God".
As such, this Beatitude is an
ambiguous statement that can be taken in multiple ways.
Paraphrase: Those who make peace or appeasement (in this world) are happy/content with themselves as they are named or called (by the world) children of God.