" The Greek word translated “peace” in the Scripture is eirene. This word is equivalent to the Hebrew word shalom. Essentially, eirene embodies completeness, wholeness, and an inner resting of the soul that does not fluctuate based on outside influences. A person who is at peace is someone who is stable, calm, orderly, and at rest within. The opposite of peace, of course, is inner chaos, anxiety, and worry. This "

― Tony Evans , Victory in Spiritual Warfare: Outfitting Yourself for the Battle