Peaceful words and actions are centered in meditation to God. Without these in your lifestyle with others words can easily enter to disrupt a meditation to become less pleasing before the Lord.
Think on this: I will mediate God's peace and my lifestyle is guided by His own peace to center me with pleasing Him accordingly.
Now Sovereign Lord, you are letting your slave go free in peace according to your declaration; because my eyes have seen your means of saving that you made ready in sight of all the peoples a light for removing the veil from the nations and a glory of your people Israel. Selected from: Luke 2: 29-32 NWT