In an article in The Atlantic, Ross Andersen raises the question: "Did Humans Ever Live in Peace?"

Archeologists have long had evidence of conflict between small rival groups. And the earliest signs of war have been dated to the dawn of civilization (with the Sumerians and Egyptians). But recent discoveries at Laguardia, Spain pushes proof of our warring inclination to the dawn of agriculture. So how far does war go back in our history?

Because war is, by definition, organized violence. Hieroglyphic inscriptions tell us that more than 5,000 years ago, the first pharaoh conquered chiefdoms up and down the Nile delta to consolidate his power over Egypt. A Sumerian poem suggests that some centuries later, King Gilgamesh fended off a siege at Uruk, the world’s first city. But new findings, at Laguardia and other sites across the planet, now indicate that wars were also occurring at small-scale farming settlements all the way back to the dawn of agriculture, if not before.

For nearly a century, anthropologists have wanted to know how long people have been engaged in organized group violence. It’s not some idle antiquarian inquiry. For many, the question bears on human nature itself, and with ruinous wars ongoing in Europe, the Middle East, and elsewhere, it has become more resonant. If warring among humans began only recently, then we might be able to blame it on changeable circumstances. If, however, some amount of war has been with us since our species’ origins, or earlier in our evolutionary history, it may be difficult to excise it from the human condition.

But Andersen closes his piece with a view of what he thinks is hope:

What separates us most from other species is our cultural plasticity: We are always changing, sometimes even for the better. We have found ways to end blood feuds that implicated hundreds of millions. War may be a long-standing mainstay of human life, an inheritance from our deepest past. But each generation gets to decide whether to keep passing it down.

Possible Preaching Angle:

Andersen's view is common today. It sees humanity as though in constant progress towards perfection. We currently rest at the zenith. His "hope" is for this progress to continue. But a survey of our history reveals that this view is no hope at all. It is simply doing the same thing over and over again while expecting a different result. That is not hope, it is insanity. There is no hope for lasting peace until the Prince of Peace appears (Isa. 9:6-7).