Skip to content ↓

How Can I Know I’m Not a Christian?

How can I know that I’m a Christian? This is a question most of us have faced at one time or another, and even if we have not asked it ourselves, it’s likely that someone has asked for our help in wrestling through it. I recently came across an article from Michael McKinley that provides an interesting counter-question: How Can I know that I’m not a Christian?

In II Corinthians 13:5, the apostle Paul commands his readers: “Examine yourselves, to see whether you are in the faith. Test yourselves. Or do you not realize this about yourselves, that Jesus Christ is in you?—unless indeed you fail to meet the test!”

OK, that seems straightforward enough. But what does it mean to examine yourself? What should you be looking for? How do you know whether or not you are “in the faith”? What is the “test” that we might fail? I wrote Am I Really a Christian? in order to try to help answer these questions.

Well, we should all hope that we pass “the test” (again, Paul’s words, not mine!). And Scripture gives us a few things to look for that would indicate that in fact we are not “in the faith”. A few examples:

You’re not a Christian if you don’t believe true doctrine: “By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God.” (I John 4:2-3)

You’re not a Christian if you enjoy sin: “Whoever says ‘I know him’ but does not keep his commandments is a liar, and the truth is not in him, but whoever keeps his word, in him truly the love of God is perfected. By this we may know that we are in him: whoever says he abides in him ought to walk in the same way in which he walked.” (I John 2:4-6)

You’re not a Christian if you don’t persevere: “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.” (I John 2:19)

You’re not a Christian if you don’t love others: “Beloved, let us love one another, for love is from God, and whoever loves has been born of God and knows God. Anyone who does not love does not know God, because God is love.” (I John 4:7-8)

You’re not a Christian if you love your stuff more than you love Jesus: “And he said to all, ‘If anyone would come after me, let him deny himself and take up his cross daily and follow me. For whoever would save his life will lose it, but whoever loses his life for my sake will save it.”

(Luke 9:23-24)

  • Beauty

    The Greatest Beauty I’ve Ever Seen

    One of the great privileges of my life has been the opportunity to travel far and wide. While most of my travel has been related to either speaking at conferences or filming documentaries, my hosts have often invited me to deviate from the straightest course to explore and take in the area’s natural beauty. It’s…

  • A La Carte Collection cover image

    A La Carte (January 22)

    A La Carte: 15 ways to fight lust / Snowflakes / When everyone else is getting the blessings you want / Enough with the valorization of doubt / A culture of evangelism / Book sales / and more.

  • Spurgeon

    Must You Read at Least One Spurgeon Biography?

    I am not aware of a verse in the Bible that says every Christian must read at least one biography of Charles Spurgeon. Or every Calvinist, at least. But I also wouldn’t be completely shocked if it’s there somewhere and I’ve just missed it. And that’s because his life and ministry were powerfully unique in…

  • A La Carte Collection cover image

    A La Carte (January 21)

    A La Carte: What “love your enemies” does not mean / John Piper on reading providence / Talking to your Roman Catholic friends / What happens at prayer meeting? / Against executive pastors / Kindle deals / and more.

  • The Christian Standard Commentary: A Modern Commentary Steeped in Ancient Tradition

    The Christian Standard Commentary will encourage and equip God’s people to understand the text and live according to Scripture for Christ’s glory. The unique ancient-modern approach to the biblical text found in the CSC is a valuable resource for building up Christ’s church while encouraging God’s people to fulfill the Great Commission. As a commentary…

  • Finnegan

    Why I Haven’t Written A Whole Lot about My Grandson

    It has been two months since little Finnegan was born—two months since I became a grandfather for the first time. It only just occurred to me that I have said very little about this new reality, this new stage of life, this new member of our family.