Jesus said to his disciples:
“Peace I leave with you; my peace I give to you.
Not as the world gives do I give it to you.
Do not let your hearts be troubled or afraid.
(Jn 14:27-31)

Peace is Christ’s farewell gift to us. But peace is not just the absence of war, peace is the fruit of justice. Pope Paul VI reminded the world of this truth when he told the United Nations:

If you want peace, then work for justice.