Look and Live (Numbers 21:4-9; John 3:14-15)
Big Idea: Salvation comes by looking in faith to Christ crucified, believing his death is God's remedy for your sins and the death you deserve.
It’s on virtually every ambulance, hospital, and medical uniform: a serpent coiled around a pole. You’ve seen it thousands of times. Most people assume it’s purely Greek: the staff of Hermes, messenger of the gods, or the rod of Asclepius, the god of medicine. And they’re not wrong. But the symbol is older than Greece, and its deepest roots run through a desert, not an Olympus.
The answer takes us to an extraordinary moment in Israel’s wilderness wanderings, one that speaks directly to us today.
Let's look at the story and what it means for us.
Here’s the story, and I have to warn you: it’s a bit surprising.
The Problem
The story unfolds some 3,400 years ago. Forty years earlier, Israel had escaped slavery in Egypt. Since then, they'd wandered the wilderness while an entire generation died off. Now Aaron, one of their key leaders, had just died. Edom — the nation descended from Esau, Jacob's own brother — had refused them safe passage through their land. Blood relatives had turned them away. It forced a longer, harder route around the border, and the people were exhausted and angry.
They turned on God and Moses. We read in Numbers 21:4-5:
From Mount Hor they set out by the way to the Red Sea, to go around the land of Edom. And the people became impatient on the way. And the people spoke against God and against Moses, “Why have you brought us up out of Egypt to die in the wilderness? For there is no food and no water, and we loathe this worthless food.”
They had grievances: the wilderness, the lack of food and water, even the manna God provided daily. This was the seventh time in Numbers they'd brought the same complaint. Nothing satisfied them.
Their discouragement led to something more serious: complaining against God himself. They wished he had never saved them, never brought them out of Egypt, never made a covenant with them at Sinai. They resented his mercy, questioned his sovereignty, and refused to trust his word.
This was, as one preacher (Tim Keller) says:
...a character assassination of the goodness of God, a disbelief in the love of God, a disbelief that God is out for your good … That fell in the heart through the Serpent into our hearts in the very beginning, and it’s mistrust of God, it’s a refusal to believe God is good to us, that God loves us, that he’s out for our best, that is at the very bottom, and that’s the cancer that makes us believe we have to stay in control of our lives and we can’t trust God. We’ll obey God as long as it looks practical.
Grumbling runs deeper than bad attitudes. It exposes unbelief at the heart level. According to Romans 1:21, this issue goes to the heart of our spiritual problem. Ingratitude is the first step away from God. Grumbling is ingratitude given a voice, declaring that God's provision isn't enough and he cannot be trusted. Complaint without thanksgiving leads to spiritual blindness.
We're not so different. All of us have experienced God's blessings. Yet we grumble when life doesn't meet expectations. Our discontent reveals the same unbelief, the same refusal to honor God with thanksgiving. Over three thousand years later, the human heart remains unchanged.
God’s Judgment
That’s the problem. How does God respond? We read in Numbers 21:6: “Then the LORD sent fiery serpents among the people, and they bit the people, so that many people of Israel died.”
In each of the previous times that the people complained, God sent his judgment. Early incidents brought immediate but limited judgment: for instance, fire at the camp's edge. As complaints continued, judgments became more severe: plagues, nationwide consequences, mass death. By the time we get to this event, there was no warning at all.
The Lord removed his protective hand. For the first time, Israel experienced the hostile forces that had surrounded them all along.
Moses later described the wilderness as "the great and terrifying wilderness, with its fiery serpents and scorpions" (Deuteronomy 8:15). Until now, God had shielded them from these dangers. He let them experience life in the wilderness without him. They saw again that he had always been their loyal shepherd and protector.
As recently as the early 1900s, Lawrence of Arabia recorded his time in this same desert. His guides killed some twenty serpents per day—horned vipers, puff-adders, cobras, black snakes—so many that his party feared every step.
The serpents had always been there. God had simply kept them at bay.
Why did they now experience these snake bites?
As one scholar (S.R. Hirsch) writes:
The sole purpose of the snake bites…was to make the people see the dangers that lie in wait for them at every step in the wilderness, and to make them realize that it was only God’s miraculous power that had kept these dangers away from them, so far away that they did not even have an idea of their existence.
Israel faced fiery snakes, named for their venom causing intense inflammation and burning pain, possibly also for their reddish-copper coloring. The bites were lethal. People started dying.
The cobra was Egypt's chief deity, worn on Pharaoh's crown as a symbol of divine power. Israel kept complaining they wanted to return to Egypt, so God gave them a taste of what they were asking for.
Romans 1 describes one of God's most severe judgments: he hands us over to what we want. Israel wanted Egypt; God sent serpents that brought Egypt's deadly power right into their camp. This wasn't God losing his temper. It was far more terrifying—God stepping back and saying, "You don't want me? Fine. Experience life without my protection."
When we complain against God, we're demanding he remove his hand. We don't realize how many dangers he shields us from every moment: physical, spiritual, relational. We grumble about what we lack while blind to how he guards us at every turn. But if we persist in rejecting him, he may give us exactly what we're asking for. We'll discover that what we thought we wanted leads only to death.
Our complaints are a dangerous rejection of the only source of life.
The Cure
We've seen the problem: Israel's grumbling revealed unbelief in God's goodness. We've seen God's judgment: he let them taste the Egypt they longed for, bringing death through fiery serpents.
Now the question: What's the cure?
And the people came to Moses and said, “We have sinned, for we have spoken against the LORD and against you. Pray to the LORD, that he take away the serpents from us.”
The people cried out, acknowledging their sin and begging for mercy. This is repentance: not just wanting relief, but turning from the sin itself.
Then we read what happened:
So Moses prayed for the people. And the LORD said to Moses, “Make a fiery serpent and set it on a pole, and everyone who is bitten, when he sees it, shall live.” So Moses made a bronze serpent and set it on a pole. And if a serpent bit anyone, he would look at the bronze serpent and live. (Numbers 21:7-9)
Moses prayed, and God answered with a remedy that made no sense: fashion a bronze serpent, lift it on a pole, and anyone who looked at it would live. The cure mirrored the judgment. They had to look at the very thing killing them.
John Calvin called it "a mode of preservation so discordant with human reason, as to be almost a subject for laughter." It makes no sense. It seems so primitive, the stuff of legends. Zero therapeutic value. No medical logic. The cure looked exactly like the curse.
That was the point. It wasn’t that the bronze serpent had any inherent power. In fact, we read later had to be destroyed because people worshiped it (2 Kings 18:4). To look at the serpent meant turning in faith from their problem — the serpents biting them — to God’s solution. They had to stop trying to protect themselves and trust God's word. They had to trust God to do for them what they couldn’t do for themselves.
The cure was absurdly simple: look and live. No medicine. No ritual. No good works. Just look. That act of looking was faith. Those who refused died, not from venom but from unbelief.
One night, almost 1,500 years later, Jesus unfolded what this means for us today. He said this: "As Moses lifted up the serpent in the wilderness, so must the Son of Man [referring to himself] be lifted up, that whoever believes in him may have eternal life" (John 3:14-15).
Moses raised that serpent high, and all the dying Israelites had to do was look and be saved. We've been bitten by the serpent and poisoned by sin. The punishment is death. But Jesus entered the world to be lifted up on the cross and bear the curse our sins deserve. He took the venom of our rebellion into himself so we wouldn't have to die from it. The sinless Son of God became sin for us, absorbed the full weight of God's judgment, and exhausted it, so that everyone who looks to him can live.
Salvation comes by looking in faith to Christ crucified, believing his death is God's remedy for your sins and the death you deserve.
Look and live.
You don't have to clean up your life first. You don't have to master theology or conjure the right feelings. Kids don't need to understand big words—just know Jesus died for your sins and trust him. Even the worst sinner who looks to Christ will be saved.
This is so simple. Will you do it?
A Case Study
One snowy Sunday in 1850, teenager Charles Spurgeon ducked into a small chapel. The minister couldn't make it, so an ordinary member of the congregation preached from Isaiah 45:22: "Look to me, and be saved, All you ends of the earth!"
He wasn't eloquent. He mispronounced words. But that sermon that morning changed Spurgeon's life. He would become one of the greatest preachers in the English-speaking world.
The lay preacher said:
This is a very simple text indeed. It says, 'Look.' Now lookin' don't take a deal of pains. It ain't liftin' your foot or your finger; it is just, 'Look.' A man needn't go to College to learn to look. You may be the biggest fool, and yet you can look. Anyone can look; even a child can look.
Spurgeon later wrote:
I looked until I could almost have looked my eyes away. There and then the cloud was gone, the darkness had rolled away, and that moment I saw the sun.
Spurgeon’s life was changed that morning. He was set free from what was killing him. For the first time, he understood that faith wasn't about doing something for God, but simply looking to and trusting what Christ had done for him.
That same invitation stands today. The serpents have bitten. The poison is spreading. Death is certain unless you look to the cure God has provided. Jesus has been lifted high on the cross, bearing the judgment you deserve. Stop trying to save yourself. Look to him and trust that his death is the cure for your sin.
Look. Believe. And live.
