The Unshakeable Foundation: Living by Faith in What We Cannot See

There’s a fascinating paradox at the heart of Christian faith: we build our entire lives on something we cannot physically touch, see, or measure. Yet this invisible foundation proves more solid than concrete, more reliable than steel, more enduring than mountains.

Hebrews 11:1 captures this beautifully: “Now faith is the assurance of things hoped for, the conviction of things not seen.”

Think about those words for a moment. Assurance. Conviction. These aren’t flimsy, wishy-washy terms. They speak of something rock-solid, unshakeable, firm enough to lean your entire weight upon. And yet they’re connected to things we hope for—things that haven’t happened yet—and things we cannot see with our natural eyes.

Everyone Has Faith in Something

Here’s an interesting truth: functionally, every person operates with some kind of faith. Even those who claim they’re “not people of faith” place their trust in things they cannot see—gravity, love, justice, the reliability of tomorrow. We all live by trusting in realities beyond our immediate sensory experience.

But not all faith saves.

Imagine boarding an international flight and the attendant announcing: “Everyone gets a life jacket! Some will keep you afloat if we crash into the ocean. Others will drag you to the bottom even faster. But hey, everyone has a life jacket!” You’d frantically demand to know which kind you had, wouldn’t you?

The question isn’t whether you have faith. The question is: what is your faith placed in?

The Nature of Biblical Faith

Biblical faith isn’t blind optimism or positive thinking. It’s not pretending everything will work out the way you want. Instead, it’s a deep-seated confidence in the character and promises of God, even when circumstances suggest otherwise.

Consider the reality: none of us were present when God ordained before the foundation of the world that His Son would enter human history. We didn’t witness the virgin birth, the miracles, the transfiguration on the mountain. We weren’t there when Jesus wept in Gethsemane, when nails pierced His hands and feet, when He cried “It is finished!”

We didn’t see the empty tomb on that third day. We aren’t physically present now in the heavenly realms where Christ sits at the Father’s right hand, interceding for us. And we haven’t yet witnessed the trumpet sound announcing His return.

Yet we believe. We’re convinced. We’ve oriented our entire lives around this gospel story.

That’s faith—being utterly and absolutely convinced that something beyond our natural senses is true, and that it’s the only thing that really matters.

What Faith Enables Us to See

When we exercise genuine faith, our perspective shifts dramatically. We begin to see two crucial realities more clearly.

First, we see creation differently. The universe wasn’t formed from things that are visible. When we look at the intricate design of nature—the fine-tuning of physical constants, the majesty of mountains, the complexity of a single cell—we recognize the fingerprints of an intelligent, powerful, and beautiful Creator. The natural sciences have nothing to offer that should threaten genuine faith; in fact, many scientific pioneers pursued their work precisely because they wanted to understand the mind of God as revealed in His creation.

Second, we see God Himself. While God is spirit and invisible to our natural eyes, faith enables us to perceive His presence through multiple witnesses: the testimony of creation, the reality of concepts like love and justice, the revelation of Scripture, and sometimes even personal experiences where we sense His nearness in prayer or worship.

Hebrews 11:6 makes this clear: “Without faith it is impossible to please him, for whoever would draw near to God must believe that he exists and that he rewards those who seek him.”

God isn’t a stingy miser hoping we’ll somehow manage to approach Him. He delights to pour out blessing on those who seek Him. He Himself is our very great reward.

The Reward of Faith

What do we receive when we place our faith in Christ? Three beautiful gifts:

The reward of relationship. Enoch “walked with God” so closely that Scripture simply says “he was no more”—God took him. This is the beginning and end of faith’s reward: being with God, knowing Him, experiencing communion with Him.

The reward of rescue. Like Noah’s family saved through the floodwaters of judgment, we who trust in Christ pass through the waters of baptism—symbolizing our salvation from the judgment we deserve. We’ve sinned. We’ve fallen short. We deserve condemnation. But the ark of salvation, Jesus Christ, rescues us and restores us to right relationship with our Creator.

The reward of commendation. “Well done, good and faithful servant”—these are the words we long to hear. In Christ, united to Him by faith, we share in His approval. When the Father declared over Jesus, “This is my beloved Son, with whom I am well pleased,” He spoke words that cover all who are united to Christ by faith.

Living Out This Faith

So what does it look like to live by this faith day by day?

It means perseverance—refusing to shrink back when a million voices tell us to abandon trust in Jesus. It means gathering with other believers, spurring one another on, helping each other when faith struggles.

It means reverent fear—taking God seriously, standing on the truth of His Word even when it’s unpopular, choosing the fear of God over the fear of man.

It means worship—taking everything God has given us, including the very breath in our lungs, and offering it back to Him in gratitude and praise.

Noah built an ark in the desert while surrounded by violence and corruption, mocked and maligned by everyone around him. But he chose reverent fear of God over fear of man. And when the floods came, his faith saved his household.

The Invitation

Perhaps you’ve never placed your faith in Jesus Christ. Today could be that day. It starts with recognizing your need: “I have sinned. I have not trusted God. I need a Savior.” Then comes the turn: “Jesus, I believe you are the Son of God. I believe you died for me and rose again. I trust you.”

From that moment, everything changes. You begin an incredible journey of walking with Jesus, experiencing the reward of relationship, the joy of forgiveness, the assurance of His pleasure. You start to see the world differently—not as a cosmic accident, but as the beautiful creation of a wise and loving God.

For those who already trust in Christ: press on. Don’t give up. Jesus is worth it. Though we don’t see everything, though we don’t have all the answers, we have confidence. We have assurance.

We have faith in the One who is absolutely faithful.

And that changes everything.

This content was created with AI assistance based on a recent sermon preached at Cross+Crown and reviewed by church staff. You can access the sermon here.