What is helpful in understanding 1 John 1:8 is looking at its immediate context. 1 John 1:10 says if we say we have not sinned. 1 John 1:10 switches gears from 1 John 1:8 in regards to time; John talks about the declaration on committing sin in verse 8 (which is present tense) to a declaration on committing sin being a past declaration (with verse 10). Verse 10 is saying there are people who said they have not sinned (past tense). This is clearly a gnostic belief. Why? Well, most believers today hold to the idea that they have sinned as a part of their old life before coming to Christ (Regardless of whether they are “OSAS,” a “Sin and still be saved” type believer, or a “Conditional Salvationist”). So this clearly is a “gnostic belief” that John was warning the brethren about (See 1 John 2:26). 1 John 1:8 is a present declaration of sin. It is saying if we say we have no sin when we do sin (present tense).
Notice that - If we confess our sins, he is faithful and righteous to forgive us our sins, and to cleanse us from all unrighteousness (vs. 9) is
IN CONTRAST TO - If we
say that we have
no sin, (present tense) we
deceive ourselves, and
the truth is not in us (vs. 8) and - If we
say that we
have not sinned, (past tense) we
make him a liar, and
his word is not in us (vs. 10). Certain people like you misunderstand verse 9 to mean that we must confess each sin that we commit as we commit them (keep a specific inventory) as an additional requirement to remain cleansed and if we forget a sin we are toast! Genuine believers speak the same/acknowledge/agree with God's perspective about their sins and have a settled recognition and acknowledgment that one is a sinner in need of cleansing and forgiveness.
This has to be the interpretative understanding of this verse because 1 John 2:4 says if we say we know Him and do not keep His commandments we are a liar and the truth is not in us.
1 John 2:3 - By this we
know that we have come to know Him, (already know Him, already saved, demonstrative evidence) if we "keep" (Greek word "tereo" - guard, observe, watch over -
Strong's Greek: 5083. τηρέω (téreó) -- to watch over, to guard) His commandments. 4 The one who
says, “I have come to know Him,” and does not keep (guard, observe, watch over) His commandments, is a liar, and the truth is not in him. We do not flawlessly obey God's commandments 100% of the time. We are not sinless, without fault or defect, flawless, 100% of the time, but in the eyes of God, believers are seen in the eyes of God as righteous and flawless because we are clothes in the righteousness of Christ. (Romans 3:24-28; 4:5-6; Philippians 3:9 etc..)
The OSAS's interpretation on 1 John 1:8 does not work because it conflicts with a normal reading on 1 John 2:3-4.
OSAS works just fine, but sinless perfection does not work.
You cannot always be in sin (breaking God's commands) as a part of 1 John 1:8 and yet also fulfill 1 John 2:3 that says we can have an assurance of knowing Him if we keep His commandments. Especially when 1 John 2:4 says we are a liar and the truth is not in us if we break his commandments. In other words, if the OSAS interpretation on 1 John 1:8 was true, then I would be damned if I do by obeying God's commands (1 John 1:8) and yet I would be damned if I don't by not obeying God's commands (1 John 2:4).
Only Jesus Christ has flawlessly obeyed all of God's commandments and is without sin. You are taking a legalistic approach to 1 John 2:3-4 and neither 1 John 1:8 or 1 John 2:3 teach that we are flawless 100% of the time or breaking God's commandments/sinning 24/7 either.
In fact, the New English Translation says this for 1 John 1:8,
"If we say we do not bear the guilt of sin,
we are deceiving ourselves and the truth is not in us."
(1 John 1:8 NET).
In other words, this verse is saying that if a person sins and says they do not bear the guilt of sin (in the sense that they will not have to face any wrath or Judgment from God over their sin) then they would be deceiving themselves and the truth would not be in them.
More eisegesis.
This is exactly what the Eternal Security proposes. They are saying that they do not bear the guilt of any sin (destruction of their soul and body in hell fire) if they do sin because they believe their future sins are paid for by Jesus.
You don't seem to have much faith in the blood of Christ to wash away your sins. Sinless perfection has replaced the blood of Christ in your self righteous plan of salvation. Daydreamer hit the nail on the head in post #252 and Pearl hit the nail on the head in post #255. You have some soul searching to do.
They are saying, they do not bear the guilt or the punishment of sin at the final Judgment because of their belief on Jesus. In short, 1 John 1:8 is a denial of the existence of sin on some level. “If we say we have no sin (in the sense that it does not exist) we deceive ourselves and the truth is not in us.” (1 John 1:8).
You are not fooling me with your crafty eisegesis.
In fact, to see just how silly your argument actually is for 1 John 1:8, you would have to believe that you are sinning right now at this very moment in order for such a verse to be true because 1 John 1:8 is speaking in the present tense.
If we say we have no sin - literally “sin we do not have" (refusing to admit we are sinners) in the present tense, we deceive ourselves, and the truth is not in us. John is talking directly to you. This does not mean that we are sinning 24/7 in the present tense either, so put away the straw man card.
John prescribes that we do not think that sin is an illusion, and we are automatically saved, but John is telling us to "sin not" and go to our advocate Jesus Christ (1 John 2:1), and confess our sins so as to be forgiven of sin and to be cleansed of all unrighteousness (1 John 1:9). How can you confess and be forgiven of sin if all your future sin is paid for? It makes no sense.
It makes perfect sense because, "If we confess our sins, he is faithful and righteous to forgive us our sins, and to cleanse us from all unrighteousness" (vs. 9) is
IN CONTRAST TO - If we
say that we have
no sin, (present tense) we
deceive ourselves, and
the truth is not in us (vs. 8) and - If we
say that we
have not sinned, (past tense) we
make him a liar, and
his word is not in us (vs. 10). Verse 9 does not mean that we must confess each sin that we commit as we commit them (keep a specific inventory) as an additional requirement to remain cleansed and if we forget a sin we are toast, as you teach. That would turn confession into a work for salvation in your legalistic plan of salvation. Again, genuine believers speak the same/acknowledge/agree with God's perspective about their sins and have a settled recognition and acknowledgment that one is a sinner in need of cleansing and forgiveness.
You can say that John is talking about a break of fellowship by one's sins and not a loss of salvation, but that would not be consistent with Scripture. 1 John 5:12 says he that has the Son has life, and he that does not have the Son does not have life.
What bondage you must live in!

Your arguments bring back painful memories for me while still under bondage in the Roman Catholic church prior to my conversion. 1 John 5:13 - These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life, and that you may continue to believe in the name of the Son of God. How could you possibly have any assurance of salvation whatsoever?
CONTINUED...