from that list of verses, there are no Christians to be seen anywhere because the scripture says that if we say we have no sin we deceive ourselves and the truth is not in us. That means we are all liars.
Obviously, 1 Jn. 1:8 is not speaking to Christians anymore than verse 10 means that John includes himself and Real Christians under the umbrella of those who claim
they have never sinned! Are there Christians in existence that deny that they need an Advocate with the Father? That they
never needed forgiveness and cleansing from all sin? If they
have no guilt of sin (v.8) and have
"never sinned" (v.10), in what capacity could the work of Christ on the Cross qualify Jesus as a "Savior"? From what?
Such would be absurd to apply these two passages to Christians.
You claim that if some Christian claims that God can actually cleanse from ALL SIN and ALL UNRIGHTEOUSNESS,
that they are LIARS, even though that claim is made by Scripture that ALL SIN is cleansed, which one can only conclude that NO SIN is left uncleansed. Along with others, disbelieve the vast overwhelming statements to the contrary in this Epistle, and all your energy is dedicated to dismantle their obvious meaning so that they can be twisted to conform to your view of what one's personal failures are, and what one single verse says when it is wrenched from its context.
The opposite conclusion from what yours is, you think that John is a liar, and that no one is ever cleansed from ALL sin and unrighteousness, that God does half a job when He regenerates the soul. Your interpretation suggests that what John
meant to say is,
"He who sins is a Christian."
Even the unregenerate believes that they are going to heaven they die. One thing that I have found to be quite consistent is, that the unregenerate wishes to avoid hell too! Every natural man flatters himself by thinking that he shall escape it. Most people believe that they are going to be in heaven regardless of what they believe. It is ironic that they are generally satisfied with a religion that makes “themselves” the standard for getting in! If the standard is that they must “be a good person,” to get in, we must ask, “how good is good enough?” It is not surprising that if you ask an individual,
they are always “good enough!” No matter how far the bar has to be lowered, an individual will generally include themselves in the category of those that are going to heaven! The “standard” is not what they make it to be, but what
God makes it to be. Yet the vast majority of Evangelicals are doing the very same thing by creating a standard in which sin is allowed into the picture, and ignoring what Scripture says is the result of continued sinning.
"Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it" (Matt. 7:14). So many "Christian" teachers convincingly get others to believe that the gate is wide, and broad is the way.
This is not Christianity, it is heresy! 
