Understanding What It Means to Be a Christian

When someone asks “What is a Christian?” the answers we usually hear don’t quite capture the full picture. Let me walk you through what it really means.

Beyond Simple Definitions

You might think a Christian is simply someone who has faith. But here’s the thing, every worldview requires faith. Muslims, Buddhists, Hindus, Mormons, they all operate on faith. You can’t scientifically prove any religious worldview, so saying Christians are people of faith doesn’t really distinguish us.

What about believing in Jesus? That seems more specific, right? But even that’s not quite enough. James points out in his letter that demons believe in Jesus too. They know exactly who He is. So mere belief, in the intellectual sense, isn’t what defines a Christian.

Two-Part Reality

Being a Christian actually has two essential components:

First, it’s about entering into a relationship with Jesus. Second, it’s about living in that relationship with Jesus.

Here’s how you can define it: A Christian believes that Jesus is who he claimed to be, and that Jesus accomplished what he said he would accomplish.

Who Jesus Claims to Be

You probably know John 3:16, it’s one of the most quoted verses in Scripture. It tells us that God loved the world so much that He gave his only Son, and whoever believes in Him won’t perish but will have eternal life.

That word “believes” is crucial. When we believe in Jesus, we’re accepting that he is who he says he is. In John’s Gospel, Jesus identifies himself as the Son of God and by that, he means he is God. That’s a massive claim, and it’s the foundation of Christian faith.

More Than Intellectual Agreement

But here’s where it gets deeper. Biblical belief isn’t just nodding your head and saying “Yeah, I agree with that.” Remember, demons believe and they know exactly who Jesus is. Biblical belief isn’t about checking a box, raising your hand at church, to get some kind of “get out of hell free” card. If it were that simple, demons would qualify as Christians.

The Power of Trust

I prefer the word trust because it captures what “belief” really means. When you trust in Jesus, you’re acknowledging something profound: you can no longer trust in your own ability to reach God. You can’t trust yourself to be right with God through your own efforts. You can’t earn forgiveness, work your way to salvation, or buy your ticket into heaven.

Biblical trust means transferring your confidence from yourself to Jesus. You’re trusting that he is God, and that he did something on the cross that you could never do for yourself. That’s why Romans 6:23 says the gift of God is eternal life through Jesus Christ, it has to be a gift because there’s nothing we could do to earn it.

A Personal Relationship, Not a Religion

Christian faith has a personal focus, and that focus is Jesus Christ himself. Christianity isn’t a religion or a philosophy. It’s not a building or an organization. Christianity isn’t a checklist of rules and regulations. It’s about trusting in Jesus and that everything centers on him.

Acts 2:36 declares that God made Jesus both Lord and Messiah. Now, God didn’t suddenly transform Jesus into something he wasn’t, he declared and demonstrated who Jesus had always been. Jesus is Lord (which connects to Yahweh, God’s personal name). He’s God himself. And he’s the Messiah, the fulfilment of all those Old Testament prophecies.

The Response: Confession of Sin

If you genuinely believe Jesus is Lord, that he’s God, and that he fulfils the messianic hope, there’s only one appropriate response: falling to your knees and confessing your sins. Confession is an essential part of entering into relationship with Jesus.

So what is sin? Simply put, sin is anything contrary to God’s character. God is honest, so when we lie, we’re acting against his character and that’s sin. Confession just means agreeing with God that you’ve acted in a way that contradicts his nature.

In Acts, we see two types of sin being addressed. First, there’s the sin of not believing Jesus is who he says he is. Second, there’s the sin of acting in ways that break covenant with God by behaving contrary to his character.

Understanding Covenant

A covenant is an agreement, in this case between God and humanity. Sin shows that we don’t recognize who Jesus is, and we act in ways contrary to God’s character. We deny Jesus’s identity and violate the covenant through our behaviour.

Acts 2:38 gives us Peter’s response: “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit.“

What Jesus Did

Jesus accomplished what he promised. He said he would die on the cross and pay the penalty for our sin. You see, our sin creates separation from God just like when you violate a marriage covenant, it creates distance in that relationship. Our sin separates us from God.

But here’s the tension: we have human sinfulness, and God has perfect holiness. God’s holiness can’t simply overlook sin or pretend it never happened. If God did that, he’d cease to be holy and just. Sin carries a penalty.

If you’re not a follower of Jesus, you’ll pay that penalty yourself and that is eternal separation from God. But if you’re a Christian, you understand that Jesus was penalized for your sin on the cross. He endured the punishment that was meant for us. That’s why forgiveness is now available as Jesus paid the price. When we believe that by faith, it opens the door to relationship with him.

Romans 10:9 puts it this way: “If you declare with your mouth, ‘Jesus is Lord,’ and believe in your heart that God raised him from the dead, you will be saved.” The resurrection is visible proof that Jesus actually did what he said he would do.

More Than a Transaction

The word “Christian” can sometimes sound like a one-time transaction: check the box, confess your sins, acknowledge Jesus is God, then move on with life. But the Bible talks about us being disciples true followers of Jesus. The term “Christ-follower” is probably more theologically accurate. Being a Christian means entering into relationship with Jesus and living in that relationship with him.

Adopted Into God’s Family

The Bible uses powerful metaphors to describe the Christian life. Romans 8:15-17 talks about adoption. The passage mentions “sonship” (a term related to ancient inheritance laws), but whether you’re a son or daughter of God, the Spirit brings about your adoption. Through the Holy Spirit, we cry out “Abba, Father.”

When you become a Christian, you get a new Father. Abba is an intimate, personal term in Aramaic the language Jesus spoke. God becomes our Abba, our Father. The Spirit confirms with our spirit that we’re God’s children. And if we’re children, we’re also heirs with Christ.

The adoption metaphor beautifully illustrates the Christian journey: you move into a relationship, you enter a family, and then you live within that family of Christ-followers.

That’s what it means to be a Christian, not just a decision you made once, but a living, growing relationship with Jesus that transforms everything about who you are.