What is young earth creationism?

Young earth creationism, often abbreviated YEC, holds that God created the universe and everything in it, including plant and animal life and the first human beings, within six ordinary, consecutive 24-hour days, and that this creation took place relatively recently, typically calculated at somewhere between six and ten thousand years ago. It represents one of the major positions held by Bible-believing Christians on the relationship between Genesis and the natural sciences, and remains the majority view within many evangelical traditions and denominations.

This view is associated with organizations such as Answers in Genesis and the Institute for Creation Research, and with prominent voices like Ken Ham, and it has shaped the curricula of many Christian schools and homeschool programs. Its advocates see it not as a marginal or anti-intellectual position but as the view most consistent with a plain, historical reading of Scripture, the same interpretive method conservative evangelicals confidently apply to the rest of the Bible, including the miracles of Exodus, the historical narratives of the Gospels, and the bodily resurrection of Christ. For many young earth creationists, applying a different, more flexible interpretive method specifically to the early chapters of Genesis feels inconsistent with how they read every other part of Scripture as straightforward history.

Young earth creationists point to the repeated formula in Genesis 1, 'there was evening, and there was morning,' attached to each numbered day, a pattern used elsewhere in the Old Testament almost exclusively to denote literal, ordinary days. They also lean heavily on Exodus 20:11, where God grounds the weekly Sabbath commandment directly in a literal six-day creation week followed by a day of rest, arguing this strongly implies the creation days were understood as the same kind of days Israel was commanded to observe weekly.

They further read the genealogies of Genesis 5 and 11 as intended to function as a fairly tight, continuous chronology connecting Adam to Abraham, providing the basis for calculating a relatively young age for humanity and, by extension, the earth itself.

A central theological commitment of young earth creationism concerns death. Since Paul writes that death entered the world through sin (Romans 5:12), young earth creationists hold that no death, whether human or animal, existed anywhere in creation before Adam and Eve's sin in the garden. Prior to that point, Genesis describes creation as 'very good' (Genesis 1:31), which young earth advocates take to exclude the predation, decay, and death visible throughout the natural world and fossil record today.

This commitment shapes how young earth creationists interpret geology as well; many hold that most of the earth's fossil-bearing sedimentary layers were deposited rapidly during the catastrophic, global flood of Noah's day (Genesis 7:11), rather than accumulating gradually over millions of years.

Young earth creationists distinguish between what they call operational science, the repeatable, observable, testable science used to build bridges or develop medicine, and origins science, which reconstructs unobserved, unrepeatable past events and therefore depends heavily on unproven starting assumptions. They argue that assumptions like a constant, unchanging rate of radioactive decay across billions of years, or slow, uniform sedimentation, are themselves unprovable philosophical starting points rather than neutral, assumption-free observations, and that a catastrophic flood model can plausibly account for much of what is observed in the geological record.

Young earth creationists also point to phenomena they believe are more easily explained by a recent creation and global flood than by a slow, gradual model, including rapidly formed rock layers observed after events like the 1980 Mount St. Helens eruption, polystrate fossils that appear to cut across multiple geological layers as though those layers formed quickly rather than over vast ages, and relatively low levels of accumulated salt and sediment in the oceans compared to what billions of years would be expected to produce. Critics dispute how representative or conclusive these particular examples are, but young earth researchers continue to actively investigate and publish on these questions within their own scientific and academic organizations.

The clear strength of young earth creationism, even in the eyes of many who disagree with it, is its straightforward consistency with the most natural, plain reading of the Hebrew text. Its critics, including some other conservative, Bible-believing scholars, raise concerns about how well this view fits with the strong consensus among geologists and astronomers, and about whether the genealogies were truly intended as tight, gapless chronologies.

Whatever position you take on this question, it is worth remembering that young earth creationists and their old earth counterparts share the same foundational conviction: that God, not chance, purposefully created you and everything around you, and that conviction is far more important than the number of years involved.