"Sirs, what must I do to be saved? And they said, Believe on the Lord Jesus Christ, and thou shalt be saved..." — Acts 16:30–31 (KJV)
Few questions are more important than this one: What must I do to be saved?
Every religion attempts to answer it. Some say you must obey commandments. Some say you must perform good works. Some say you must persevere until death. Others say you must participate in rituals or sacraments.
Yet when this question was asked directly in the Bible, the answer was surprisingly simple.
In Acts 16, a Philippian jailer found himself face-to-face with the reality of God.
After witnessing a miraculous earthquake and realizing God's power was at work, he came trembling before Paul and Silas and asked:
"Sirs, what must I do to be saved?" (Acts 16:30)
This was not a casual question. The jailer understood that his eternal destiny was at stake. He wanted a clear answer.
Thankfully, Paul gave one.
Paul and Silas replied:
"Believe on the Lord Jesus Christ, and thou shalt be saved." (Acts 16:31)
This is why Acts 16:31 is one of the clearest salvation verses in the Bible. The question was direct, and the answer was direct.
Notice what they did not say. They did not say: be baptized, turn from every sin, join a church, persevere until death, promise lifelong obedience, prove your faith through works, or clean up your life.
Instead, they gave one condition: believe on the Lord Jesus Christ.
Many people struggle with the simplicity of the Gospel. Surely there must be more.
Yet Scripture consistently presents salvation as a gift. A gift is received. It is not earned.
The same truth is explained in Romans 4:5, where Paul says righteousness is counted to the one who does not work, but believes.
If salvation could be earned, it would no longer be a gift. It would become a wage.
The Gospel is good news because Jesus accomplished what we never could.
The Bible teaches that all people are sinners.
"For all have sinned, and come short of the glory of God." (Romans 3:23)
Sin separates humanity from God. The consequence is spiritual death and eternal judgment. That is why salvation is necessary.
The good news is that Jesus paid the penalty for sin through His death and resurrection.
Jesus lived the sinless life we could never live. He died on the cross for our sins. He was buried. He rose again the third day.
The Gospel is not primarily about what we do for God. It is about what Christ has already done for us.
That is why Hebrews 10:14 is so powerful: by one offering, Christ has perfected forever them that are sanctified.
Salvation rests upon His finished work.
Many people assume faith means proving oneself through good behavior. But biblical faith is trust. It is reliance upon Christ.
When a person believes, he is placing confidence in Jesus rather than himself. The focus shifts from personal performance to Christ's promise.
That is why Jesus repeatedly said:
"He that believeth on me hath everlasting life." (John 6:47)
See John 6:47 Explained for one of the simplest statements of saving faith in Scripture.
Good works are important. The Bible encourages believers to grow, serve, and obey.
But good works follow salvation. They do not cause salvation.
A tree produces fruit because it is alive. It does not become alive by producing fruit.
Likewise, good works are the result of spiritual life, not the means of obtaining it. This is why a changed life can never become the proof-text basis for assurance.
Perhaps the clearest example is the thief on the cross.
He could not be baptized. He could not join a church. He could not perform years of good works.
Yet Jesus promised:
"To day shalt thou be with me in paradise." (Luke 23:43)
Why?
Because the thief believed. His confidence rested in Christ.
Absolutely. The Bible was written so believers could know.
"These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life." (1 John 5:13)
This is the central point of The Record That Must Be Believed. Assurance rests on God's testimony, not on self-examination.
Jesus also promised in John 5:24 that the believer has everlasting life, shall not come into condemnation, and is passed from death unto life.
Ultimately, every person faces the same decision.
Will you trust yourself? Or will you trust Christ?
Will you rely on your works? Or will you rely on His finished work?
The Gospel calls us away from self-reliance and toward faith in Jesus Christ.
The Bible gives a clear answer to the question: What must I do to be saved?
"Believe on the Lord Jesus Christ, and thou shalt be saved."
Not because faith is a work. Not because we deserve salvation. But because Jesus Christ paid the full price for sin and freely offers eternal life to all who believe.
The question is not whether Christ has done enough.
The question is whether you will believe Him.
For another clear promise from Jesus, see John 11:25–26 Explained.