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Last week in 1 John, we asked: Will the real Jesus please stand up?

This week, John moves us from belief to behavior. Because if we know who Jesus is, the next question becomes: What does it look like to actually walk with Him?

John begins with one of the clearest statements in all of Scripture:

“God is light, and there is no darkness in Him at all.”

This is not a new idea John invented. Throughout the Bible, God is described in terms of light.

Creation begins with light.
God leads Israel by fire in the wilderness.
The Psalms speak of God’s face shining on His people.
Jesus is called the light of the world.
And Revelation ends with the promise that we will need no sun or moon because God Himself will be our light.

Light matters because of what light does.

  • Light gives life. Nothing grows without it.
  • Light guides. It helps us know where to walk and keeps us from stumbling.
  • Light reveals. It exposes what is hidden and shows things as they really are.

John says this is who God is.

He is not partly light and partly darkness.
He is not mixed.
He is not divided.

And because God is light, following Him means learning to walk in the light too.

That is where John begins pushing back against false teaching.

Some people were claiming they had fellowship with God while living however they wanted. They treated sin like it didn’t matter. They separated spiritual things from physical life, as if Jesus saved the soul but not the body, and as if love of neighbor, justice, honesty, and repentance were optional.

John says no.

You cannot claim fellowship with God while walking in darkness.

You cannot separate your spiritual life from the way you actually live.

Sin is real.
It matters.
And pretending otherwise is not freedom—it is self-deception.

Now we must be clear here, John is not saying that those who follow Jesus will never sin. He is not saying we will be perfect. But he is saying sin should not become our standby, our normal, or something we stop taking seriously.

We should not pretend we are sinners, but neither should we stop trying to live as saints.

The goal is not perfection, but repentance. Not pretending sin is gone, but refusing to make peace with it.

And that is the good news—when we fail, when we sin, we need not despair.

John writes, “I am writing this to you so that you will not sin. But if anyone does sin, we have an advocate…”

Jesus does not only forgive us—He helps us.
He stands with us.
He makes transformation possible.

We need not do sin, and we need not stay in sin when we do sin.

This week, spend time slowly reading 1 John 1:5–2:2.

Let it challenge you.
Let it expose what needs to be exposed.
Let it remind you that the light of God is not meant to shame you—but to lead you into freedom.

Some questions to pray through this week:

  • Am I taking the darkness (sin) seriously in my life?
  • Do I truly believe in Jesus as the representation of God as light and love?
  • Have I placed my trust in Him alone for both forgiveness and transformation?
  • Am I excusing or defending darkness in my life?  Am I minimizing or justifying someone else’s life simply because they support what I value?
  • Do I care more about whether someone says the right Christian things, or whether their life actually reflects humility, repentance, truth, and love?
  • Have I confused political loyalty, cultural influence, or “winning” with faithfulness to Jesus?

Because John reminds us:

A God of light expects lives filled with light.