All devotionals

The Long Wait Underground

a creature that waits seventeen years for one summer

Some cicadas spend exactly 13 or 17 years underground — both prime numbers — then climb up all at once. The hidden years are not wasted. They are the appointed wait.

creatures patterns deep time

Young · ages 4–7 The Patient One

The Bug That Waited

For everything there is a season, a time for every activity under heaven.

Ecclesiastes 3:1 (NLT)
Illustration for “The Bug That Waited”

Down in the dark dirt, under the grass, there is a little bug fast asleep on a tree root. It is a cicada.

How long does it sleep down there? A day? A week? No — seventeen whole years! That is longer than you have been alive. It waits, and waits, and waits, in the quiet dark.

Then one warm summer, all at once, millions of cicadas climb up into the sunshine and start to sing.

God gave the cicada a special clock inside it. It always knows the right time to come up — not too early, not too late. The waiting wasn't a mistake. The waiting was part of the plan.

God has a right time for everything He makes.

Waiting is hard, isn't it? Waiting for your birthday. Waiting for your turn. But God is never late. When something feels slow, you can remember the little cicada, waiting in the dark — and trust that God knows the perfect time.

Prayer

Dear God, thank You for the cicada that waits so long for its summer. When I have to wait, help me remember that You always know the right time. Your timing is endless and good. Amen.

Older · ages 8–12 The Patient One

Counting the Years

My future is in your hands...

Psalm 31:15 (NLT)
Illustration for “Counting the Years”

Here is one of the strangest life stories in nature. A periodical cicada hatches, drops to the ground, and burrows down to a tree root. There it drinks a thin sap called xylem and grows — incredibly slowly. And it stays underground not for weeks or months, but for exactly 13 or 17 years.

Then, in one single spring, every cicada for miles climbs out of the ground on the same few nights. They shed their shells, unfold new wings, fill the trees, sing, mate, lay eggs — and within a few weeks, they die. The next generation drops into the soil to begin the long wait all over again.

But here's the real puzzle: how does a bug underground, in total darkness, know that exactly 17 years have passed? Scientists think it actually counts — sensing the tree above it changing with each spring, ticking off the seasons one by one until the right number arrives.

Think about how much of that life is spent waiting — almost all of it. Seventeen years in the dark, for a few weeks in the sun. To us that can sound like a waste. But it isn't. The waiting is exactly how the cicada survives; the long hidden years are doing real work.

The same God who set that clock inside a cicada holds your whole timeline in His hands. The slow seasons of your life — the parts that feel like waiting in the dark — are not lost time to Him. They count.

When you're stuck waiting and it feels like nothing is happening, remember the cicada counting quietly underground. Your "future is in His hands" — not just the exciting part at the end, but every patient year leading up to it.

Prayer

God, I'm not very good at waiting. But the cicada reminds me that waiting can be part of the plan, not a mistake in it. My future really is in Your hands — all of it, even the slow parts. Help me trust Your timing. Amen.

Teen · ages 13–18 The Patient One

Why a Prime Number

This vision is for a future time. It describes the end, and it will be fulfilled. If it seems slow in coming, wait patiently, for it will surely take place. It will not be delayed.

Habakkuk 2:3 (NLT)
Illustration for “Why a Prime Number”

Stop on the two numbers, because they're not random: cicadas emerge on cycles of 13 or 17 years — and both are prime. Never 12, never 15, never 16. Prime numbers, the ones divisible only by themselves and one.

That turns out to be a survival strategy written in arithmetic. Predators tend to run on their own cycles — a population that booms every 2, 3, 4, or 5 years. If cicadas emerged every 12 years, they'd repeatedly line up with predators peaking on 2-, 3-, 4-, and 6-year cycles, getting ambushed at full strength again and again. But 13 and 17 are prime, so they almost never sync up with a shorter predator rhythm. A 17-year cicada and a 5-year predator only collide once every 85 years. The cicada hides inside a number that's hard to divide.

And the emergence itself is a second strategy stacked on the first: by surfacing all at once in absurd numbers — over a million per acre — they overwhelm everything that eats them. Predators gorge until they physically can't eat another bug, and there are still millions left to reproduce. It's called predator satiation. Survival by being patient, then survival by being many.

Here's what gets me. To get the payoff, the cicada has to commit to the full 17 years. There's no shortcut, no version where it does eight years and gets a partial reward. The whole strategy only works because it waits out the entire number. The waiting isn't the cost of the plan — it is the plan.

We tend to treat waiting as dead time, the boring gap before the real thing starts. Habakkuk was handed a promise with no delivery date and basically told: it's coming, it's not late, wait for it. That's a brutal instruction when you're in it. But "slow" and "broken" are not the same thing. The cicada's clock looks like nothing is happening for sixteen years — right up until everything does.

You live in a world built for instant — instant replies, instant skips, instant delivery. A creature that invests seventeen patient years for a few loud weeks is almost offensive to that. But some things genuinely cannot be rushed without being ruined. The question isn't whether the waiting is annoying. It's whether the One who set the clock can be trusted to ring it on time.

Prayer

God, I'm wired for instant, and waiting makes me feel like You've forgotten or I've fallen behind. The cicada says slow isn't the same as broken. Help me believe a promise can be real even when its timer is still running. Your timing is endless, and it isn't late. Amen.

Adult The Patient One the edge of knowing

The Arithmetic of Waiting

Yet God has made everything beautiful for its own time. He has planted eternity in the human heart, but even so, people cannot see the whole scope of God’s work from beginning to end.

Ecclesiastes 3:11 (NLT)
Illustration for “The Arithmetic of Waiting”

Consider what the cicada is actually doing down there. For thirteen or seventeen years it lives in darkness, drinking dilute sap from a root, growing by almost imperceptible degrees — and counting. Not metaphorically. The leading evidence says it tracks the host tree's annual pulse, registering each spring as the tree's fluids shift, summing the seasons until a precise prime total is reached. A brain smaller than a grain of rice, keeping a tally across two decades with no calendar and no light.

And the primality is not decoration. Model the system and it falls out as optimal: a cycle length sharing no small factors with predator and competitor rhythms minimizes catastrophic overlap. The cicada is, in effect, solving a problem in number theory with its life cycle — choosing the interval least divisible by the threats around it. Then it stacks a second solution on top: synchronous mass emergence, so many bodies surfacing at once that no predator can make a dent. Two distinct survival strategies — one temporal, one numerical — and both depend entirely on the waiting being complete.

But don't mistake the elegance for closure. We do not actually know, at the molecular level, how the cicada counts — what the clock is made of, where the tally is kept, how a year is registered and stored across seventeen of them. We don't fully know why evolution landed on these primes and not others; the leading models point to the ice ages and the need to stay synchronized in cold, unreliable summers, but the precise history is reconstructed, not witnessed. And the "stragglers" — cicadas that emerge four years off-schedule, sometimes in large enough numbers to seem like a brood trying to shift its entire cycle — hint at machinery we have only begun to read. We can describe the arithmetic beautifully and still not hold the clock in our hands. We can say what the waiting is for without knowing how the creature counts its way through it — which is a strangely fitting thing to be left holding, at the end of a story about patience: not the answer, but a longer wait for it.

Ecclesiastes says God "has made everything beautiful for its own time" and in the same breath admits the catch: He has "planted eternity in the human heart, but even so, people cannot see the whole scope of God's work from beginning to end." That is precisely the cicada's condition, and ours. The creature cannot see why year nine matters; it simply keeps the count. We are handed a life whose shape we can't see from inside it, asked to keep faith with seasons whose purpose won't resolve until later — sometimes much later. The cicada is not wasting sixteen years. It is being made ready, in the dark, by a clock it did not set and cannot read.

Most of us carry some long underground season — a stretch that has felt like dormancy, like nothing taking root, like time quietly lost. The cicada offers a different reading: that the hidden years are not the absence of the work but the form of it, and that emergence, when it comes, comes all at once. You are not required to see the whole scope from beginning to end. You are only asked to keep the count, and to trust that the One who has made everything beautiful for its own time has not lost track of yours.

Prayer

God, I have buried years I'd call wasted — seasons that felt like darkness and delay. The cicada keeps its count without ever seeing the summer it's counting toward. Teach me that kind of trust: that the hidden time is not lost time, that You are making things beautiful for their own season, and that I don't need to see the whole scope to keep faith with You. Your patience is endless. Amen.

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