PSALM 34:12-14
12 Would you like to enjoy life? Do you want long life and happiness? 13 Then keep from speaking eviland from telling lies. 14 Turn away from evil and do good; strive for peace with all your heart.
When we are at peace within ourselves, everything around us tends to become peaceful. The opposite is also true. The Bible speaks about how to work for peace in Psalm 34:12-14.