Compound Interest and the Bible

Quick answer: Compound interest is growth on your growth: your returns start earning returns of their own, so money invested early multiplies far more than money invested later. The single biggest factor is time, not the amount you start with. A dollar invested in your twenties can outgrow several dollars invested in your forties. Scripture treats the same principle as stewardship: develop what you have been given rather than bury it. The practical takeaway is simple. Start now, even with a small amount, and let time do the heavy lifting.

A lot of men in their mid-twenties, three years into a solid job, are genuinely trying to do right by their finances. They keep meaning to open an investment account, but they feel like they should wait until they have more money first.

That sentence comes up again and again. "I keep meaning to open an investment account, but I feel like I should wait until I have more money first."

More money first. That sentence is how men lose forty years.

There was nothing lazy or reckless about him. He was doing what most of us do: waiting for a threshold that never quite arrives before starting something he already knew he should be doing. There's always a reason to wait. A bill to clear. A trip coming up. A car repair. Life.

But compound interest doesn't care about your reasons. It responds to one variable: time.

This is one of those financial concepts that sounds like basic economics, and it is. But it's also a genuinely biblical idea. Understanding it from both directions (numerically and theologically) may be one of the most useful things a man can do with a quiet hour.

What Compound Interest Actually Does

Let me explain this the way I would to a friend who's never come across it.

When you invest money, it earns returns. At a 7% average annual return (roughly what a diversified index fund has averaged historically over long periods) your money grows. But here's the part that changes things: compound interest means those returns also earn returns. Every dollar of gain starts earning on top of your original investment.

Year 1: You invest $1,000. It earns 7%. You now have $1,070.
Year 2: That entire $1,070 earns 7%. You have $1,144.
Year 3: $1,144 earns 7%. You have $1,224.

Extend that curve out:

Over 10 years at 7%: $1,000 becomes about $1,967.
Over 20 years: $1,000 becomes about $3,870.
Over 30 years: nearly $7,600.
Over 40 years: nearly $15,000.

The same $1,000 that becomes $3,870 in 20 years becomes $15,000 in 40. Same dollar, same fund, twice the time to work.

This is why "start early" isn't a platitude. The gap between starting at 22 and starting at 32 amounts to far more than ten years of contributions. It is a different life outcome entirely.

The Numbers That Should Change How You Think

Let me give you two men.

Man A starts investing $200 a month at 22. He contributes until retirement at 65, which is 43 years. At a 7% average annual return, he ends up with approximately $600,000.

Man B starts at 32. Same $200/month. Same 7% return. He contributes for 33 years. He ends up with approximately $295,000.

The difference is about $305,000.

But here's what makes that number worth sitting with: Man A only contributed $24,000 more in actual dollars than Man B. $200 a month for ten extra years. That $24,000 in additional contributions generated roughly $281,000 in additional growth. Man A got there on the same effort and the same salary as Man B, having done just one thing differently: he started earlier.

That is the power of time in investing. It's one of the only financial levers entirely within your control early in life, and entirely beyond your reach once you've lost it. If you want to see your own version of this curve, run your numbers through the compound interest calculator.

The Parable of the Talents: A Story About What Buried Potential Costs

Here's where it gets interesting.

Jesus tells a parable in Matthew 25 about a wealthy man who goes on a journey. Before leaving, he entrusts three servants with different amounts of his wealth: one receives five talents, another two, another one. (A "talent" was a significant unit of currency, roughly 20 years of wages for a labourer.) The master leaves.

The servant with five talents puts them to work and comes back with ten. The one with two does the same and doubles his to four. The third, given a single talent, buries it in the ground, where it sits safe and unchanged the whole time the master is away.

When the master returns, he commends the first two: "Well done, good and faithful servant. You have been faithful over a little; I will set you over much." The third receives a very different verdict. "You wicked and slothful servant." The talent is taken from him and given to the man with ten.

I am not suggesting Jesus was teaching a seminar on index funds. This parable is primarily about the kingdom: about what God entrusts to us and what faithful stewardship of that gift looks like. But the financial imagery is deliberate. The two who are commended put their capital to work, while the one who is judged had buried his out of fear. Nobody stole that buried talent; it just sat in the ground and never grew.

What I find striking is the servant's reasoning. He never claims he spent the talent on himself or lost it somewhere. His explanation is fear: "I knew you, that you are a hard man... and I was afraid." He let the weight of expectation become a reason to do nothing. The very knowledge that the master expected results became the justification for producing none.

There is something uncomfortably recognizable about that logic. You know what you should do, you know time matters, and you know the window is open right now. And somehow that clarity becomes pressure, which becomes avoidance, which becomes another year of the talent sitting buried in the ground.

For a longer look at what this parable means for how Christians think about investing, I've written more about the Parable of the Talents and money.

Why We Bury Our Talents

The servant who buried his talent explained himself plainly: "I was afraid." He knew the master had high standards. He knew something was expected of him. And instead of acting on that knowledge, he froze.

I recognize that man.

I recognize him because waiting has always felt safer to me than acting, even when I hadn't made a single catastrophic decision with money. "I'll start investing when I have $1,000 saved first." "I'll start once I'm out of debt." "I'll start once I understand it better." Those thoughts make sense, and in some cases they're even right.

But in many cases, "I'll start later" is simply a more articulate way of saying "I was afraid."

There's a real spiritual dimension to financial paralysis. Fear of getting it wrong. Shame about starting from behind. A sense that the window has already closed. These feelings are more common than men admit, and because we don't talk about money in most churches, there's nowhere to voice them and no one to say "this is normal, you're not the only one."

Money is often part of what's underneath the surface issue in a man's life. The paralysis rarely comes from ignorance. What sits underneath it is shame, and shame doesn't respond to information. A man who feels like his finances are a verdict on his character will not be helped by a better spreadsheet. What he needs is permission to start from where he actually is, without pretending he's somewhere else.

If you've felt any of that, you're not alone, and you're not disqualified. But those feelings don't stop the clock. The years you spend waiting are years compound interest is not working for you.

A bad market won't be what undoes your long-term wealth, and neither will bad luck.

The enemy of compound interest is delay.

If the fear behind the paralysis runs deeper than finances, if there's shame or identity wrapped up in your relationship with money, I'd encourage you to spend some time at the /gospel page. The best financial habits grow from a settled sense of who you are. Anxiety builds nothing that lasts.

The Stewardship Frame That Changes the Question

Here is how I've come to think about this:

The money you earn (and the time that money has to grow) is not yours in the ultimate sense. It is entrusted to you, the way the master's property was entrusted to his servants. You can use it. You can grow it. You are accountable for what you do with it.

Stewardship covers the managing of what you keep, well past the giving away of a slice off the top. A faithful steward doesn't leave the estate to sit idle while waiting for the perfect moment to tend it. He tends it now, with what he has.

This is worth sitting with. Most of us think of stewardship as a tithe conversation: what percentage of what I earn do I give to the church? That's part of it. But stewardship is a broader category. It includes the question of what you do with the portion you keep. How you spend it, yes. But also whether you grow it. Whether you're building capacity to be generous later. Whether you're thinking about money in terms of its potential rather than just its current balance.

Compound interest is what happens when stewardship is patient. It is the financial equivalent of the seed that falls in good soil and bears grain (thirtyfold, sixtyfold, a hundredfold) not by any dramatic intervention but simply by time and the right conditions.

Starting with $50 a month is stewardship. It doesn't feel impressive. But $50 a month invested at 22 will do more work than $200 a month invested at 40, because of the time it has to compound.

The real question was never about having enough to start. It is about whether you are being faithful with the little you already hold.

What to Actually Do: A Practical Starting Point

This section is for the man who's read this far and is thinking: fine. I get it. Now what?

Here's the simplest version I know.

Step 1: Open a TFSA and check your contribution room.

A Tax-Free Savings Account is the best first investment account for most Canadians, especially younger ones. Your money grows tax-free. You pay no tax on withdrawals. The 2026 annual TFSA contribution limit is $7,000. If you've never contributed before, you've likely accumulated significant unused room. Finding your exact TFSA contribution room takes about two minutes through CRA My Account. If you turned 18 in 2009, your total available room in 2026 could be as high as $109,000.

Step 2: Set up automatic contributions.

Don't decide each month whether to invest. Set it and forget it. Whatever you can manage ($100 a month, $200, even $50), automate it. Money left sitting in your chequing account tends to get spent, whereas money that moves to an investment account on payday usually stays put.

Step 3: Buy a diversified, low-cost ETF.

You don't need to pick stocks. For most Canadians starting out, the simplest move is an all-in-one ETF, something like Vanguard's VGRO or iShares XGRO. These hold hundreds of companies across multiple countries in a single fund, automatically rebalanced. Low fees. Nothing to watch. You buy it, you leave it alone.

A platform like Wealthsimple makes this straightforward: start with as little as $1, buy ETFs commission-free, and see your balance on your phone. No minimum. No complicated setup. Worth looking at if you're not sure where to begin.

Step 4: Leave it alone.

This is the hardest step for most men. Markets drop. Sometimes significantly. 2022 saw broad declines of 20-30%. 2020 had a terrifying crash in March. But a long-term investor in a diversified fund has recovered from every downturn in history. The biggest mistake new investors make is selling in fear, which locks in the loss and misses the recovery.

Time is working for you the whole way through, right up until you sell in panic and turn it against yourself.

A Note on Debt and Investing at the Same Time

Some men reading this are carrying debt: student loans, a car payment, maybe credit card balances. The question of whether to invest or pay down debt is genuinely complicated, and I want to be honest about that rather than wave it away. I've written more about how to work through that decision for Canadians specifically.

The short version: if you're carrying high-interest consumer debt (credit cards at 19-22%, payday loans at far worse), pay that down aggressively first. A guaranteed 20% "return" by eliminating that interest is hard to beat. But once you're in the range of lower-rate debt (government student loans, most car financing, a mortgage at current rates), the case for investing simultaneously becomes real. If your loan is at 4% and your investments are historically averaging 7%, you're mathematically ahead by investing. The math matters, and so do the parts of the decision a spreadsheet can't measure.

A reasonable approach for most men in the middle: throw everything at high-interest debt until it's gone, then redirect that same payment toward a TFSA. But while you're doing that, even $50 or $100 a month going into investments means compound interest is beginning to work. Those early years are the expensive ones to miss.

None of this means you must invest before dealing with debt. The warning is subtler: wait until everything is perfectly resolved and you can arrive at forty with no debt, no savings either, and a shorter runway than you needed.

He Didn't Feel Ready, and Neither Do You

The men from the opening, the ones waiting to have "more money first," are really saying something deeper. Investing feels like something people who have it together do. They are still figuring things out. They do not feel ready.

But compound interest doesn't wait for readiness. That's the uncomfortable grace of it. You do not have to understand everything, and you do not have to clear every financial obstacle first. What it takes is a TFSA, an automatic contribution, and an all-in-one ETF.

The servant lost his talent not through a bad investment but through never investing it at all, letting it sit in the ground until the master came home.

One Concrete Step Forward

This week: open your CRA My Account (canada.ca) and check your TFSA contribution room. If you don't have a CRA account, set one up: it takes about 20 minutes and is one of the most useful things you can do for your financial life. Then open a TFSA at Wealthsimple, set up an automatic monthly contribution (whatever you can manage), and buy an all-in-one ETF.

That's the whole move. Nothing more complex than that.

The right time to plant a tree was 20 years ago. The second-best time is today.

Why This Matters Beyond Your Retirement Account

We talk a lot in the church about generosity. Rightly so. But generosity flows more freely from abundance than from scarcity, and abundance is built over decades, not months. The man who starts investing at 22 will be in a position at 55 to give in ways that the man who started at 42 simply cannot.

Faithful stewardship of what's small is the only path to being entrusted with what's large. Jesus says it plainly in the parable: "You have been faithful over a little; I will set you over much."

It doesn't take much to start, only the willingness to actually begin.

Here is what it looks like when one of them finally moves. He opens a TFSA. Buys his first ETF. Contributes $150. He is a little embarrassed it has taken him so long.

Here is the same thing I'll tell you: you're right on time.