It is both telling and reassuring that secular people, faced with moral horror as we see now in Las Vegas, can still speak of evil as a moral fact — even if they continue to deny moral facts in the classrooms and courtrooms. No one can deny that the horror in Las Vegas came about by an act that was evil, pure evil, and evil as a fact.

Today, most Americans awoke to news from Las Vegas that is nothing less than horrific. For so many in Las Vegas, Sunday night must have seemed like the night that would never end.

In the face of such overwhelming news, we naturally seek after facts. We want to know what happened, and when. We want to know who did it. By mid-morning the facts were staggering. More than fifty people are dead and hundreds wounded after a lone gunman opened fire on a music festival from a perch in a hotel room 32 floors above. The attack was deadly, diabolical, and premeditated.

The shooting is already described as the worst in American history. The gunman, believed to be Stephen Paddock, killed himself as police prepared to storm his hotel room, from which he had aimed his deadly gunfire. The facts emerged slowly, and are still emerging. Paddock had no notable criminal record. He had worked for a defense contractor, owned two private aircraft, and was known to own guns. He was reported to like Las Vegas for its gambling and entertainment. No one seems to have considered him a threat. His brother, contacted after the massacre, said that the family was beyond shock, as if “crushed by an asteroid.”

In Las Vegas and beyond, hundreds of families are crushed by grief and concern. More than fifty human beings, very much alive just hours ago, are now dead, seemingly murdered by random order.

The facts will continue to come as investigations continue. We need facts in order to steady our minds and grapple with understanding. We must have facts, and yet we can be easily overwhelmed by them. Some “facts” will not be facts at all. National Public Radio helpfully and honestly ended its news coverage of the massacre with these words: “This is a developing story. Some things that get reported by the media will later turn out to be wrong. We will focus on reports from police officials and other authorities. We will update as the situation develops.” I count that as both helpful and honest.

But the facts of who and what and where and how, still unfolding, point to the even more difficult question — why?

Why would anyone kill a fellow human being? Why launch an ambush massacre upon concertgoers listening to country music? Why premeditate a mass killing?

Was he driven by some obsession, fueled by some grievance? Was he sending a signal or political message as an act of terrorism? Is the answer psychiatric or pharmacological? Our minds crave an answer.

Why do we ask why?

We cannot help but ask why because, made in God’s image, we are moral creatures who cannot grasp or understand the world around us without moral categories. We are moral creatures inhabiting a moral universe and our moral sense of meaning is the faculty most perplexed when overwhelmed by horror and grief.

The terror group known as ISIS or the Islamic State claimed that Stephen Paddock was a “lone wolf” attacker who had recently converted to Islam. Law enforcement authorities said there is no evidence of anything related to ISIS or Islam.

Clark County (NV) Sheriff Joe Lombardo told reporters that he was not sure if the massacre was sending a message as a terror attack: “We have to establish what his motivation is first. And there’s motivating factors associated with terrorism other than a distraught person just intending to cause mass casualties.”

So far as we now know, Paddock left no note and communicated no clear message. The gunfire tells some story, but we do not yet know what the story is. We may never know.

That troubles us, and so it should. Knowing the story and determining the motivation would add rationality to our understanding, but we will never really understand.

A massacre by a lone gunman killed 32 people at Virginia Tech in 2007. Another killed 27, mostly children, at Sandy Hook Elementary School in 2012. Yet another killed 49 people at the Pulse nightclub in Orlando in 2016. We really do not fully understand any of these attacks, nor countless other outbreaks of evil around the world.

One of the main theological insights about evil is that it is so often absurd. It is ultimately inexplicable, unfathomable, and cannot be resolved by human means.

President Trump has demonstrated little interest in academic disputes over moral philosophy so he probably did not intend to wade into deep theoretical waters when he called the massacre “an act of pure evil.” But he called it right, and he expanded on his judgment. “In times such as these I know we are searching for some kind of meaning in the chaos, some kind of light in the darkness.” He went on to say: “The answers do not come easy. But we can take solace knowing that even the darkest space can be brightened by a single light, and even the most terrible despair can be illuminated by a single ray of hope.”

That is exactly how a president should speak, and underlining the “act of pure evil” as evil is exactly how a morally sane person should think. The judgment of evil here, real evil, should be beyond dispute.

Evil is a fact, too. And evil is a theological category. The secular worldview cannot use the word with coherence or sense. The acknowledgement of evil requires the affirmation of a moral judgment and a moral reality above human judgment. If we are just accidental beings in an accidental universe, nothing can really be evil. Evil points to a necessary moral judgment made by a moral authority greater than we are — a transcendent and supernatural moral authority: God.

College professors tell us that moral relativism has produced a generation of Americans who resist calling anything evil, and even deny the existence of moral facts. Justin P. McBrayer, who teaches at Fort Lewis College in Colorado, wrote in The New York Times that “many college-aged students don’t believe in moral facts.”

That’s truly frightening, but McBrayer argues that by the time students arrive at college, they have already been told over and over again that there are no moral facts — that nothing is objectively right or wrong.

Only the Christian worldview, based in the Bible, can explain why moral facts exist, and how we can know them. Only the biblical worldview explains why sinful humanity commits such horrible moral wrongs. The Christian worldview also promises that God will bring about a final act of moral judgment that will be the final word on right and wrong — as facts, not merely speculation. The Gospel of Christ points us to the only way of rescue from the fact of our own evil and guilt.

Our hearts break for the families and communities now grieving, and we pray for them and for those even now fighting for life.

It is both telling and reassuring that secular people, faced with moral horror as we see now in Las Vegas, can still speak of evil as a moral fact — even if they continue to deny moral facts in the classrooms and courtrooms. No one can deny that the horror in Las Vegas came about by an act that was evil, pure evil, and evil as a fact.

I think of the Prophet Isaiah’s words: “Woe to those who call evil good and good evil, who put darkness for light, and light for darkness, who put bitter for sweet and sweet for bitter.” [Isaiah 5:20, ESV]

Albert Mohler, Jr., serves as president of The Southern Baptist Theological Seminary. This article appeared on his blog and is used with permission.