I do not misunderstand sin, sin is anything that you place in your life before God.
And I see on this forum that you are always eagerly seeking to charge people with sin (similar to the Pharisees).
Anyway, God does give us definitions of sin. Below are a few examples. And note how they do not apply to Christians.
1:
Unbelief in Jesus is the sin the world is convicted of, John 16:9.
2:
Unrighteousness is sin, 1John 5:17. Christians
cannot be charged with this sin as our faith is counted for righteousness, Rom 4:5.
3:
Transgression of the law is sin, 1John 3:4. Christians
cannot be charged with this sin as we're
not under the law (Rom 8:2, Rom 10:4, Gal 3:25, Gal 5:18, 1Tim 1:9). Remember that
whatever the law says it says to those under it, Rom 3:19.
So can Christians be charged with sin when they believe on Jesus?
Rom 8:33
Who shall lay ANY THING (this includes sin) to the charge of God's elect? It is God that justifieth.
As Christians
cannot be charged with sin thus we see in scripture that we
"cannot sin" (1John 3:9), we've
"ceased from sin", 1Pet 4:1. As long as we continue to believe on Jesus, and not turn back to unbelief (such as turning back to works of the law), then our
life is hid with Christ in God (Col 3:3) and we're covered by his sinlessness/righteousness/holiness/perfection.
for what you may consider to be a minor sin will still lead you to spiritual death if not repented and asked forgiveness of it; As a person who you may consider to have done a major sin such as murder and does not repent and ask forgiveness of it.
Your claim above contradicts scripture which says Christians
cannot be charged with
ANY THING, Rom 8:33
I'm curious under the doctrine you follow, what if a Christian forgets to repent of some minor thing? Or what if they don't get an opportunity to repent because of issues, injury, whatever, that stops them from doing so before they die?
What a precarious and misleading doctrine you follow.
BTW, what did Christians repent of?
It was
dead works of self-righteousness (which is sin).
Heb 6:1
Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God
It is not a misunderstanding of sin when Paul warns Timothy that he can become impure to sin again. Timothy is a believer in Christ, yet Paul still warns him about becoming a partaker in others sin making him impure again.
Are you claiming to be
pure in your behavior/lifestyle?
Do you obey the law perfectly?
Now consider from scripture how Christians were made pure.
1John 3:3
And every man that hath this hope (that we who believe on Jesus are now the sons of God) in him purifieth himself, even as he is pure.
The false doctrine you follow contradicts this. Hence you misunderstood 1Tim 5:22. The warning in 1Tim 5:22 to not be a partaker of another's "sin" is a warning about the sin of unbelief such as by turning back to works of the law, which is denying that Jesus is the Christ.
Consider Eph 5:6,7 which gives the same type of warning not to be partakers with deceivers (those who deny Jesus is the Christ, 1John 2:22).
Eph 5:6,7
Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.
Be not ye therefore partakers with them.