I Still Sin... Am I Not a True Christian?

Written by: J.A.O. Vergara | March 27, 2026

Have you ever asked yourself, "If I am already a Christian, why is it still so hard to be good?" Many or maybe most, at the moment a sinner has faith in Jesus Christ, gets baptized, and is added into the Body of Christ, expect that all temptations will just magically disappear. But then Monday comes, someone cuts you off in line at the grocery counter, or you face a temptation at work or school, and you realize, "Wow, I still struggle." Actually, this is a very normal question. Many believers feel guilty when they realize that becoming a Christian doesn't mean becoming instantly perfect. But to understand what is really happening in our Christian life, we need to look at two important things the Bible teaches: our completely new identity in Christ, and our ongoing, daily fight against the flesh.

1. We Have a New Identity (Sin is No Longer the Boss)

First, we need to understand what happened when we became Christians. The Bible teaches that when we obeyed the gospel, our old self died.

The Apostle Paul explains this beautifully in Romans 6:3-4 (NASB):

"Or do you not know that all of us who have been baptized into Christ Jesus have been baptized into His death? Therefore we have been buried with Him through baptism into death, so that as Christ was raised from the dead through the glory of the Father, so we too might walk in newness of life."

He goes on to say in Romans 6:6-7 (NASB):

"knowing this, that our old self was crucified with Him, in order that our body of sin might be done away with, so that we would no longer be slaves to sin; for he who has died is freed from sin."

It's like this: before we knew Christ, sin was our master. We were slaves to it. But through Jesus, that old contract was torn up. We died to that old life. We are a new creation! Sin is no longer our boss. We still have the free will to choose, but we don't fight alone using just our own human strength. When we choose to submit to God, it is His Grace and the Holy Spirit who actually give us the power to say "no" to sin.

This beautiful teamwork between our choice and God's power is shown perfectly in Philippians 2:12-13 (NASB):

"So then, my beloved, just as you have always obeyed, not as in my presence only, but now much more in my absence, work out your salvation with fear and trembling; for it is God who is at work in you, both to will and to work for His good pleasure."

Notice the balance there? We are told to "work" and make the right choices, but it is actually God who is "at work in you" giving you both the desire and the strength. We now have a Spirit-empowered freedom to choose to do what is right.

2. The Struggle is Real (The Flesh is Still Here)

Now, here is the reality check. Even though sin is no longer our master, its influence hasn't completely left the building. We are new in Christ, but we are still living in physical bodies in a broken world. We call this "the flesh."

This is why we still feel a tug-of-war happening inside us. If you feel this struggle, you are not alone! Paul wrote about this exact same feeling in Galatians 5:17 (NASB):

"For the flesh sets its desire against the Spirit, and the Spirit against the flesh; for these are in opposition to one another, so that you may not do the things that you please."

This simply means that our new spiritual identity wants to follow God, but our human flesh—our old habits, worldly desires, and physical weaknesses—still wants to go the wrong way. The Christian life is an active, daily choice. We have to wake up every day and choose to follow the Spirit instead of the flesh.

But here is the good news: Yes, we can choose to follow the Spirit because God has given us a spirit of power! We have the assurance that we can win this daily fight because God has already enabled and equipped us to do it. We can have full confidence that when we truly listen to God and rely on His strength, we have the power to say "no" to sin.

3. Making Sense of 1 John (Struggling vs. Practicing)

Sometimes, people get confused when they read the letters of John because it seems like he is saying two different things.

In 1 John 3:9 (NASB), he writes:

"No one who is born of God practices sin, because His seed abides in him; and he cannot sin, because he is born of God."

If you just read that verse alone, you might think, "Oh no, if I commit a sin, it means I am not really born of God!" But wait, we have to look at the whole picture. Earlier in that same letter, John wrote this in 1 John 1:8 (NASB):

"If we say that we have no sin, we are deceiving ourselves and the truth is not in us."

So, how do we harmonize these two verses? It's actually very simple and practical.

When John says a Christian "cannot sin" or "does not practice sin," he is talking about a lifestyle of unrepentant, habitual rebellion. As a Christian, you cannot live a double life. You cannot deliberately and comfortably make a habit of sinning without feeling conviction. Because you have a new identity, sinning should feel unnatural to you now. It breaks your heart because it breaks God's heart.

But, because we are still fighting the flesh, we will sometimes stumble and fall. We have moments of weakness. That is what 1 John 1:8 is talking about. We are not perfectly sinless yet.

The Solution: Walk in the Light

So, what do we do when we stumble in our daily fight? We don't give up, and we don't hide in the dark. We do what 1 John 1:9 (NASB) tells us:

"If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness."

The Christian life is a journey of "walking in the light." It means being honest with God. When we fall, we immediately get back up, confess it to God, ask for forgiveness, and keep in mind that we can always do what is right and rely on God's Grace and the counsel of the Holy Spirit so that we can live daily in a manner that is righteous and pleasing to God.

To wrap it up: 

Yes, you are a completely new creation. Your identity is in Christ, and sin is no longer your master. But at the same time, you are in a real, daily, Spirit-empowered fight against the flesh. Don't be discouraged by the struggle. The fact that you are fighting the sin in your life is proof that the Spirit is at work in you! Keep reading the Word, keep praying, and keep walking in the light.