When a warning light appears on a car dashboard, the first question is obvious: What is wrong?
The same is true when a furnace stops working on a cold night. Before the problem can be fixed, someone has to diagnose it correctly.
We can ask the same question about our world.
Why is there violence, dishonesty, hatred, exploitation, suffering, and death? Why do the same problems appear in every generation and every culture? And why, if we are honest, do we find selfishness, pride, anger, and wrongdoing within ourselves as well?
The Bible gives a diagnosis. It identifies the fundamental problem as sin.
And until we understand that diagnosis, we will never understand why we need the gospel.
The Bible’s Diagnosis of the Human Condition
Romans 3 describes humanity standing before God:
“That every mouth may be stopped, and all the world may become guilty before God.”
Romans 3:19
The passage then makes an important statement about God’s law:
“By the law is the knowledge of sin.”
Romans 3:20
That tells us something about the purpose of God’s law.
We often think of commandments as a checklist. If we obey enough of them, perhaps we can consider ourselves good people. Maybe we imagine that if our good deeds outweigh our failures, God will accept us.
But Romans 3 says the law does not provide a way for sinful people to justify themselves before God.
Instead, the law diagnoses the problem.
God’s Law Is a Standard, Not a Ladder to Heaven
Think of a ruler placed beside a line drawn freehand. The ruler does not make the line straight. It reveals where the line is crooked.
God’s law works in a similar way.
It gives us an objective moral standard against which our lives can be measured. Commands against murder, theft, adultery, covetousness, dishonouring God, and other sins reveal how far our conduct falls short of God’s righteousness.
Jesus went even deeper. God’s standard does not concern outward behaviour alone. It reaches our motives, desires, attitudes, and thoughts.
The result is universal:
“For all have sinned, and come short of the glory of God.”
Romans 3:23
The Bible does not divide humanity into sinners and non-sinners. All have sinned.
The differences between us may be real, but none of us meets God’s perfect standard.
What Does It Mean to Sin?
The biblical idea of sin includes the thought of falling short or missing the mark.
Imagine aiming at a target and failing to reach the centre. That is what Romans 3 says humanity has done with respect to the glory and righteousness of God.
Sin is therefore more than committing particularly notorious acts. It includes every way in which we fail to be what our Creator intends us to be.
- We have not loved God perfectly.
- We have not loved others perfectly.
- We have acted selfishly.
- We have spoken dishonestly.
- We have entertained wrong desires and motives.
- We have rejected God’s authority and chosen our own way.
God’s diagnosis is not merely that the world around us is broken. The problem is also within us.
That is why changing our circumstances can never solve humanity’s deepest problem.
Can Good Works Erase Our Sin?
Once we recognize the problem, a natural response is to try harder.
Perhaps we decide to live differently from now on. We become more religious, more generous, or more disciplined.
Those may be worthwhile changes, but they cannot erase what has already happened.
Imagine someone who breaks the law and then promises to obey it perfectly from that day forward. Future obedience does not cancel the earlier offence.
The same principle applies to our standing before God.
Good works cannot reach backward and remove guilt.
Romans 3 therefore says:
“By the deeds of the law there shall no flesh be justified in his sight.”
Romans 3:20
The law can reveal our need, but it cannot save us from that need.
A diagnostic instrument can tell you what is wrong with an engine. It cannot itself repair the engine.
God’s law exposes our sin. We need something more than a diagnosis. We need a Saviour.
The Good News Begins With Jesus Christ
After describing humanity’s guilt, Romans 3 turns to what God has done.
The gospel is not the announcement that human beings can make themselves acceptable to God. It is the announcement that God has acted to save sinners through Jesus Christ.
The Bible says:
“Christ Jesus came into the world to save sinners.”
1 Timothy 1:15
That is the good news.
Our condition is serious, but God has not left us without hope.
Jesus Christ came into this world knowing exactly what our problem was and what salvation would cost.
Christ Paid the Cost of Our Redemption
Romans 3:24 speaks of being:
“justified freely by his grace through the redemption that is in Christ Jesus.”
Redemption carries the idea of being set free through the payment of a price.
What was the price of our redemption?
The passage points directly to Christ and His blood.
Jesus died on the cross.
The Bible teaches that He did not die merely as an example of courage or self-sacrifice. He died for our sins.
He took the place of guilty sinners.
The judgment our sin deserved fell upon Him.
The New Testament summarizes the gospel this way: Christ died for our sins, was buried, and rose again.
The cross therefore confronts us with two realities at once.
Our sin is so serious that nothing less than the death of Christ could deal with it.
Yet God’s love is so great that Christ willingly gave Himself to save sinners.
How Can God Forgive and Still Be Just?
Romans 3 asks a profound question.
How can a righteous God forgive guilty people without simply ignoring their guilt?
The answer is found at the cross.
Romans 3:26 describes God as both:
“just, and the justifier of him which believeth in Jesus.”
God does not pretend that sin does not matter.
He does not sweep guilt aside.
At the cross, Christ bore the judgment that sin deserved. God’s justice was satisfied, and therefore He can forgive the sinner who trusts in Christ without compromising His righteousness.
A debt that someone else has fully paid is no longer outstanding.
In a far greater way, Jesus Christ paid the price necessary for our redemption.
This is why salvation rests on His work, not ours.
Salvation Is Received Through Faith
Romans 3 repeatedly emphasizes faith.
Faith is not earning salvation. It is not proving ourselves worthy of God.
Faith means placing our confidence in Jesus Christ and what He has accomplished.
The question is no longer:
Have I done enough?
The question becomes:
Am I trusting Christ?
The distinction is fundamental.
If salvation depended on our performance, none of us could have confidence before God. The law has already diagnosed our condition: all have sinned.
But the gospel directs our attention away from ourselves and toward Christ.
He died.
He bore sin.
He rose again.
He offers salvation.
The sinner receives that salvation through faith.
The Diagnosis Is Personal
It is easy to look at violence, injustice, corruption, and suffering and ask:
What is wrong with the world?
The Bible eventually turns that question toward each of us:
What is wrong with me?
God’s diagnosis is the same.
“All have sinned.”
That includes respectable people and openly immoral people. Religious people and irreligious people. People whose failures are obvious and people whose sins are largely hidden.
Recognizing that truth is part of repentance. We stop defending ourselves before God and acknowledge His verdict.
We need mercy.
We need forgiveness.
We need a Saviour.
Repent and Believe the Gospel
Jesus called people to:
“Repent ye, and believe the gospel.”
— Mark 1:15
Repentance means acknowledging the truth about ourselves and turning from our rebellion against God.
Faith means trusting the good news about Jesus Christ.
Christ died for our sins.
He was buried.
He rose again.
He offers forgiveness and eternal life to those who trust in Him.
The Bible’s diagnosis of sin is serious, but diagnosis is not the end of the message.
The gospel gives the answer.
Jesus Christ came into the world to save sinners.
