It is one of the most important questions a person can ask, and asking it honestly is itself a good sign — a careless heart doesn’t wonder. But the question needs a trustworthy answer, not a guess and not a mood. So how can you actually know?
Amid the noise, go to the Judge
This question, along with “what is truth?”, is one of the most commonly asked there is. A person asking it will get a myriad of answers — many voices clogging the airwaves, each competing for dominance. But it is very clear that the Bible has, over time, given simple yet profound answers that are as true today as they were millennia ago. So what does the Bible say about this subject?
“He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day.” — John 12:48
Jesus is basically saying that the Word of God, the Bible, is going to be our judge. The Bible is where the recorded words of Jesus are.
“And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.” — Revelation 20:11
This passage reiterates that the Bible is our judge. So go read the Word of God, the Bible — and just like a textbook in college, you will know ahead of time how you will do in the finals.
— Liz
And here, then, is what that Word plainly says.
Not by feelings
Start by setting aside the shakiest ground. Feelings rise and fall with sleep, health, weather, and circumstance. A person can feel saved on a good day and lost on a hard one without anything real having changed. Assurance built on feelings is a house on sand. God means for you to know — and He rests that knowing on sturdier things.
— 1 John 5:13
Notice that word — know. Assurance is not presumption; it is the settled confidence God wants His children to have. Here are the steady witnesses He gives.
1. Have you obeyed the gospel?
The first question is not “do you feel saved?” but “have you done what the gospel asks?” On the day the Church was born, when the crowd was cut to the heart and cried, “what shall we do?” the answer was not a feeling to summon but a step to take:
— Acts 2:38
Repentance, baptism in Jesus’ name for the remission of sins, and the gift of the Holy Ghost — this is the new birth (see The New Birth). If you have obeyed it, you have real ground to stand on; if you haven’t yet, this is where assurance begins. God’s promises attach to His way of salvation, not to a sincere wish apart from it.
2. The power He gives — and the evidence of it
Here is the part that must not be left out, because it is where assurance becomes more than inward feeling: the new birth comes with power. “Ye shall receive power, after that the Holy Ghost is come upon you” (Acts 1:8). To be born again is not only to have sins forgiven in heaven; it is to have the Spirit of God come to live in you — and in the book of Acts, that coming was something people could know had happened.
The clearest case is the house of Cornelius. God had to prepare Peter even to go to Gentiles at all — a vision repeated three times until he obeyed (Acts 10:9–16). Peter went, and preached; and before he had even finished, God answered in a way no one could mistake:
“And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost. For they heard them speak with tongues, and magnify God.” — Acts 10:45–46
Those Jewish believers did not expect the Spirit to be given to Gentiles, and would not have believed it — except that they heard the very same evidence they themselves had received at Pentecost. There is a striking thread here: the very sign that confounded the crowd at Pentecost — who “were all amazed and marvelled” to hear “the wonderful works of God” spoken in their own tongues (Acts 2:7–11) — is the very sign that astonished Peter and the believers here. Tongues announced the Spirit’s coming upon the Jews, and announced it again, unmistakably, upon the Gentiles. And when Peter was later called to account for going to them, this is exactly where he rested his whole defense:
“Forasmuch then as God gave them the like gift as he did unto us, who believed on the Lord Jesus Christ; what was I, that I could withstand God?” — Acts 11:17
“The like gift” — the same gift, with the same sign, as at Pentecost (Acts 2:4; 10:46; 19:6). So the receiving of the Holy Ghost in Acts was not a vague impression but a definite, evidenced experience — and it is part of the new birth itself (Acts 2:38; see The New Birth and Is Speaking in Tongues Biblical?). If you have received the Spirit of God, you have both the power to live this new life and a confirmation God Himself gave you.
3. The witness of the Spirit
When a person receives the Holy Ghost, God Himself adds an inward testimony — a quiet, deep assurance that is His, not ours:
— Romans 8:16
“Because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father” (Galatians 4:6). This is not the same as an emotion; it is the Spirit confirming the relationship — a sense of belonging to God that steadies you underneath the feelings.
4. The evidence of a changed life
John wrote a whole letter to help believers test the real thing, and his tests are not about intensity of feeling but about direction of life:
- Obedience: “Hereby we do know that we know him, if we keep his commandments” (1 John 2:3).
- Love for God’s people: “We know that we have passed from death unto life, because we love the brethren” (1 John 3:14).
- A pull away from sin: the saved heart no longer makes peace with sin but grieves over it and turns (1 John 3:9; 2 Corinthians 7:10).
- The fruit of the Spirit beginning to grow — love, joy, peace, longsuffering (Galatians 5:22-23).
None of these is perfection; all of them are direction. A saved life is one being turned, however slowly, toward God.
“But can I lose it?”
Here Christians honestly differ, and it’s worth naming plainly. Some hold eternal security — that a truly saved person can never finally be lost (John 10:28-29). Others, including most Apostolics, hold that salvation is a relationship that must be continued in: “if ye continue in the faith” (Colossians 1:23), “he that shall endure unto the end, the same shall be saved” (Matthew 24:13) — so a person can walk away. On that reading, assurance is real but present and continuing: you can know you are His today, and keep walking with Him. Either way, the cure for doubt is never anxiety; it is drawing nearer to the One who “is able to keep you from falling” (Jude 24).
Rest it on Him
So if the question is haunting you, don’t answer it by searching your feelings. Answer it by looking at Christ and His promise. “Him that cometh to me I will in no wise cast out” (John 6:37). If you have come to Him His way, you may have “boldness in the day of judgment” (1 John 4:17) — not because you are strong, but because He is faithful. And if you have never truly come, the door is open right now.