What is Soteriology?
Question 7011
Soteriology. It sounds like a complicated word, and in some ways it is, but really it just refers to the study of salvation. The term comes from the Greek word σωτηρία (sōtēria), meaning “salvation” or “deliverance,” combined with λόγος (logos), meaning “word” or “study.” So soteriology is simply the study of how God saves sinners. And if there is any doctrine we need to get right, it is this one. Get this wrong and we get everything wrong. Get this right and we have the foundation for understanding God’s entire purpose for humanity.
What makes this study so important is that it touches every single person who has ever lived. We are all sinners. We all need saving. And God, in His great mercy, has provided a way. The question is: what does the Bible actually say about how this works? Not what theologians have argued about for centuries, not what denominational traditions have handed down, but what does Scripture itself teach?
The Problem: Why We Need Saving
Before we can understand salvation, we must understand why we need it in the first place. And the Bible is absolutely clear on this point. In Romans 3:23, Paul writes, “for all have sinned and fall short of the glory of God.” Not some. Not most. All. Every single human being, apart from Jesus Himself, has sinned against God. This is not a popular message in our day. People do not like to hear that they are sinners. They prefer to think of themselves as basically good people who occasionally make mistakes. But that is not what Scripture teaches.
The problem goes back to the very beginning. In Genesis 3, Adam and Eve disobeyed God’s clear command, and through that act of rebellion, sin entered the human race. Paul explains this in Romans 5:12: “Therefore, just as sin came into the world through one man, and death through sin, and so death spread to all men because all sinned.” Notice the universal scope of this. Death spread to all men. Why? Because all sinned. We are not sinners because we sin; we sin because we are sinners. It is our nature, inherited from Adam.
The Hebrew word for sin, חַטָּאת (chatta’th), carries the idea of missing the mark. It is as if God has set a standard of perfect righteousness, and we have all missed it. Not by a little bit, but completely.
And the consequence of sin is not a slap on the wrist. Romans 6:23 tells us, “For the wages of sin is death.” This is not simply physical death, though that is certainly part of it. It includes spiritual death, separation from God, and ultimately eternal death in the lake of fire for those who die without Jesus (Revelation 20:14-15). This is where every single human being is headed apart from God’s intervention. We cannot save ourselves. We cannot earn our way to heaven. We cannot be good enough. We need a Saviour.
The Basis: What God Has Done
Here is where the good news begins. The word “gospel” itself means good news, and it is good news precisely because of how bad our situation is without it. God, in His infinite love and mercy, has done for us what we could never do for ourselves. He has provided salvation as a free gift through His Son, Jesus.
Ephesians 2:8-9 is one of the clearest statements of this truth in all of Scripture: “For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast.” Let those words sink in. Salvation is by grace. It is through faith. It is not of ourselves. It is the gift of God. It is not of works. No boasting. This is the heart of biblical soteriology. Salvation is entirely God’s work from start to finish.
The Greek word for grace here is χάρις (charis), and it refers to unmerited favour. It is not something we earn or deserve. It is freely given. And the means by which we receive this grace is faith, πίστις (pistis), which means trust or belief. We place our trust in what God has done through Jesus, not in what we can do for ourselves.
But what exactly has God done? 2 Corinthians 5:21 explains it beautifully: “For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God.” Jesus, the sinless Son of God, took our sin upon Himself on the cross. He bore the punishment we deserved. And in exchange, His righteousness is credited to us. This is what theologians call the great exchange, though the Bible simply presents it as the heart of the gospel.
Jesus Himself made this clear in John 3:16, perhaps the most famous verse in all of Scripture: “For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life.” Notice the universal scope of God’s love here. God loved the world. And notice the universal offer of salvation. Whoever believes. Not whoever is chosen. Not whoever belongs to a particular group. Whoever. Anyone. Everyone who places their faith in Jesus will not perish but have eternal life.
This is reinforced in 1 Timothy 2:3-4, where Paul writes that God “desires all people to be saved and to come to the knowledge of the truth.” And in 2 Peter 3:9, Peter tells us that the Lord is “not wishing that any should perish, but that all should reach repentance.” The Bible presents salvation as genuinely offered to all people. God’s desire is for all to be saved. The atonement of Jesus is sufficient for all, and the invitation goes out to all.
1 John 2:2 makes this explicit: “He is the propitiation for our sins, and not for ours only but also for the sins of the whole world.” The word propitiation, ἱλασμός (hilasmos), refers to the satisfaction of God’s wrath against sin. Jesus’ sacrifice satisfied God’s righteous anger, and it did so not just for believers but for the sins of the whole world. The provision is universal even though the application is conditional upon faith.
The Means: How We Receive Salvation
If salvation is by grace and not by works, how do we receive it? The Bible’s answer is consistent throughout: by faith. But what does this mean practically? It is not simply intellectual agreement with certain facts about Jesus. Even the demons believe that Jesus is the Son of God (James 2:19). Saving faith involves a personal trust in Jesus as Lord and Saviour, a turning from sin to God, and a reliance upon His finished work on the cross rather than our own efforts.
Romans 10:9-10 gives us a clear summary: “because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. For with the heart one believes and is justified, and with the mouth one confesses and is saved.” There are two elements here: believing in the heart and confessing with the mouth. This is not a formula to be recited but a description of genuine faith. Real faith in Jesus will express itself. It cannot be hidden.
Repentance is also part of the biblical picture of salvation. The Greek word μετάνοια (metanoia) means a change of mind, a turning around. In Acts 3:19, Peter calls out, “Repent therefore, and turn back, that your sins may be blotted out.” Repentance is not earning salvation by being sorry enough. It is simply the flip side of faith. When we turn to God in faith, we are simultaneously turning away from our old way of life. Faith and repentance are two sides of the same coin.
Now here is something the Bible makes abundantly clear: faith is the responsibility of the individual. God commands all people everywhere to repent (Acts 17:30). The gospel invitation is genuine. When Jesus says, “Come to me, all who labour and are heavy laden, and I will give you rest” (Matthew 11:28), He means it. The offer is real. The invitation is sincere. And when people reject Jesus, they are held responsible for that rejection, not excused because they were not “chosen.”
In John 5:40, Jesus says to the religious leaders, “yet you refuse to come to me that you may have life.” Notice that. You refuse. The problem is not that they cannot come, but that they will not come. And in Matthew 23:37, Jesus laments over Jerusalem: “how often would I have gathered your children together as a hen gathers her brood under her wings, and you were not willing!” Jesus wanted to gather them. They were not willing. The responsibility for their rejection rested on their own unwillingness, not on any divine decree that excluded them.
This is the consistent testimony of Scripture. God genuinely offers salvation to all. He takes no pleasure in the death of the wicked but desires them to turn and live (Ezekiel 18:23, 32). The failure to be saved is always attributed to human unbelief, never to a lack of divine provision or invitation.
The Components: What Salvation Includes
Soteriology encompasses several distinct but related aspects of salvation. These are not separate salvations but different facets of the one great salvation God provides.
Regeneration
Regeneration, or the new birth, is the work of the Holy Spirit by which a spiritually dead sinner is made spiritually alive. Jesus told Nicodemus in John 3:3, “Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God.” This new birth is not something we accomplish ourselves. It is a work of God. Titus 3:5 speaks of “the washing of regeneration and renewal of the Holy Spirit.” We are given new life, a new nature, the ability to respond to God in a way we could not before.
Justification
Justification is God’s declaration that we are righteous in His sight. It is a legal term, the language of the courtroom. When we place our faith in Jesus, God declares us “not guilty” because the penalty for our sin has been paid by Jesus. Romans 5:1 says, “Therefore, since we have been justified by faith, we have peace with God through our Lord Jesus Christ.” Justification is not a process; it is an instantaneous declaration. The moment we believe, we are justified, declared righteous, and at peace with God. When I was younger, it was said, “Justification, Just as If I had never sinned.”
Sanctification
If justification is our position before God, sanctification is our condition in daily life. The word comes from the Greek ἁγιασμός (hagiasmos), meaning to be set apart or made holy. Sanctification/holiness has three aspects:
Positionally, we are already sanctified/holy the moment we believe (1 Corinthians 6:11).
Progressively, we are being sanctified/made holy as we grow in Christlikeness throughout our Christian lives (2 Corinthians 3:18).
And finally, we will be completely sanctified/holy when we see Jesus and are made like Him (1 John 3:2).
Progressive sanctification involves our cooperation with the Holy Spirit. Philippians 2:12-13 captures this beautifully: “work out your own salvation with fear and trembling, for it is God who works in you, both to will and to work for his good pleasure.” We work it out because God is working it in. It is not our effort alone, nor is it passive waiting, it is in active cooperation with what God is doing in us.
Glorification
Glorification is the final stage of salvation, when we will be completely conformed to the image of Jesus. Romans 8:30 includes it in the golden chain of salvation: “And those whom he predestined he also called, and those whom he called he also justified, and those whom he justified he also glorified.” Notice that Paul speaks of glorification in the past tense even though it is still future for us. That is how certain it is. If you have been justified, your glorification is guaranteed. It is as good as done.
This will happen at the return of Jesus. 1 Corinthians 15:51-52 describes it: “Behold! I tell you a mystery. We shall not all sleep, but we shall all be changed, in a moment, in the twinkling of an eye, at the last trumpet.” Our mortal bodies will be transformed into immortal, glorified bodies like the resurrection body of Jesus. No more sin, no more sickness, no more death; this is the hope which we look forward to.
The Security: Can We Lose Our Salvation?
This is a question that troubles many believers. If we have genuinely been saved, can we lose that salvation? The Bible’s answer is a resounding no. Those who have been truly born again are secure in God’s hands forever.
Jesus Himself gives us this assurance in John 10:28-29: “I give them eternal life, and they will never perish, and no one will snatch them out of my hand. My Father, who has given them to me, is greater than all, and no one is able to snatch them out of the Father’s hand.” Notice the double security. We are in Jesus’ hand and in the Father’s hand. No one can snatch us out. Not Satan, not circumstances, not even ourselves. There is a third aspect to this in that we also have the Holy Spirit inhabiting us as our guarantor.
Romans 8:38-39 adds to this assurance: “For I am sure that neither death nor life, nor angels nor rulers, nor things present nor things to come, nor powers, nor height nor depth, nor anything else in all creation, will be able to separate us from the love of God in Christ Jesus our Lord.” Paul lists every conceivable threat and declares that none of them can separate us from God’s love. If anything in all creation (including ourselves) could separate us, Paul’s statement would be false. It is not false; we are secure.
But what about those who seem to walk away from the faith? The Bible addresses this too. 1 John 2:19 says, “They went out from us, but they were not of us; for if they had been of us, they would have continued with us. But they went out, that it might become plain that they all are not of us.” Those who permanently abandon the faith demonstrate that they were never truly saved in the first place. Genuine faith perseveres. Not because of our strength but because of God’s keeping power.
Conclusion
Soteriology is the study of how God saves sinners and it is the most wonderful study we could ever undertake. We who were dead in our sins have been made alive. We who were enemies of God have been reconciled to Him. We who deserved eternal condemnation have been given eternal life. And all of this is by grace, through faith, in Jesus.
And now something of the most utmost importance:
The invitation of the gospel remains open today. “Whoever believes in him should not perish but have eternal life” (John 3:16). Have you believed? Have you placed your trust in Jesus alone for salvation? If not, today is the day. The Bible says, “Behold, now is the favourable time; behold, now is the day of salvation” (2 Corinthians 6:2). Do not delay. Come to Jesus. He will not turn you away. And if you have believed, rejoice in the salvation you have received. You are secure in Jesus’ hands, and one day you will see Him face to face. What a day that will be!
“For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast.”Ephesians 2:8-9
Bibliography
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- Walvoord, John F. Jesus Christ Our Lord. Chicago: Moody Press, 1969.
- Geisler, Norman L. Systematic Theology. Vol. 3, Sin/Salvation. Minneapolis: Bethany House, 2004.
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