In 1 John, the bible talks about how God is light and in Him there is no darkness, not even a little. It also says if we say we have fellowship with him and walk in the darkness, we lie and do not practice the truth. I think this is so crazy and straight to the point because when we look in the mirror, we want to believe that we are walking in the light. Sometimes we think we are doing pretty good. We go to church, maybe say a five second prayer before we eat our food, talk a little bit of Christian lingo on the streets—I myself have tried to justify my sin. But God knows the truth and can see directly in our hearts.
We should be continually trying to live in the light. Like Christ, showing fruits of the spirt, gentleness, kindness, patience, etc. Not as hollow attempts to justify ourselves, but because God naturally produces those fruits in us. A fruit tree will produce fruit. You would never walk up to an apple tree and notice that avocados were growing on it. It just wouldn't happen. In the same way, we say we are Christians, there should be signs of that in our lives.
If you were arrested right now, would the judge find enough evidence to convict you of being a Christian? Being a Christian does not mean we just try to say less swear words, go to church, and be a nice person. Heaven is not for good people, it's for forgiven people and the only way to be forgiven is to accept the free gift of Jesus dying on the cross for our sin. We walk in the light because he loved us first and he died for us.
John tells us that if we walk in the light as He is in the light the blood of Jesus cleanses us from sin and we are justified. We cannot continually live in sin and say we are walking in the light. Now, we will sin, but when we do the Holy Spirit convicts us, and when we ask for forgiveness we try not to do it anymore. Sin should be disgusting to us. When we are walking in the light next to Jesus our soul should desire to be on fire for him and living for him and acting like him. We need to be telling people about Jesus, making disciples and giving God all the glory he deserves.
1 John 1:5-7
"This is the message which we have heard from Him and declare to you, that God is light and in Him is no darkness at all. If we say that we have fellowship with Him, and walk in darkness, we lie and do not practice the truth. But if we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin."