Correct me if I am wrong, but I believe that in 1 John 1, the apostle directs his writing to the unbelievers. You cannot appropriate the sacrifice of Christ for sins, unless you acknowledge your own sins before God, he says. If you say that you are not a sinner (as some eastern faiths teach), you make God a liar. The blood of Jesus Chris will cleanse you from your sins, if you acknowledge it and repent of it.
However, in chapter two, John addresses us as Christians and treats sin as an abnormality. Yes, if we fall, we have an advocate with the Father, a propitiation for our sins… but if we abide in Him, we ought also to walk even as He walked… and the word of God abideth in you, and you have overcome the world. The anointing you have received from Him abideth in you… for He was manifested to take away our sins; and in Him is no sin. Whosoever abideth in Him sinneth not… whosoever is born of God sinneth not… he that commits sin is of the devil… whosoever is born of God doth not commit sin… hereby we know that He abideth in us, by the Spirit which he has given us…etc, etc.
I have heard visiting preachers and convention speakers preach on these verses, because their lives were living testimony of the truth of these words. However, in more than thirty years of attending church more often than not twice on a Sunday, in a numbers of denominations, have I never heard sermons on these verses. Neither have I found any pastors willing even to entertain a discussion on the same. Our sinful life is taken as a mark of our fallen nature and pre-resurrection state; a pure necessity of life.
To walk as He walked, we need to die to self. God fills the empty vessel. It is a mighty anointing. Christ, the anointed one. Christians, the anointed ones. Pastors just assume we
are all anointed, and if not, then we should just be happy, not everyone is called to minister, or some such aberration. By His Holy Spirit, we can abide in Him, moment by moment. What a blessed life, and yet I have to search the globe for camp meetings, conventions, conferences, where I can find such teaching and inspirational encouragement.