Also, I John chapter 1, especially verses 8-10.
8If we say that we have no sin, we are deceiving ourselves and the truth is not in us.
9If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness.
10If we say that we have not sinned, we make Him a liar and His word is not in us.
Part 1
Well, 1 John 1:8 is about denying sin's existence (if we say we have no sin when we do sin the truth is not in us). This is basically a person saying that "sin" does not apply to them in regards to their right standing with God. For 1 John 1:8 has to be read in context to 1 John 2:4. They are essentially saying the same thing (for if we say we know Him and do not keep His commandments the truth is not in us). 1 John 1:8 is a warning to the brethren against thinking the same way as the gnostics who denied sin's existence by thinking that there was no dire after death consequences if they did sin (1 John 2:26). Hence, why 1 John 1:9 is the next verse that follows - because it teaches a person what to do if they do happen to sin. 1 John 1:8 is written to the Christian Scientist today who thinks sin does not exist whatsoever. 1 John 1:8 is also written to the OSAS proponent (i.e. The Once Saved Always Saved believer) today because they partially deny sin's existence. For they believe they sin physically but yet they think sin does not exist for them on a spiritual level whatsoever because Christ paid for all their sins including present and future sins (Whereby they believe confession of sin is not necessary in order to be forgiven of sin). In other words, these types of believers ignore both 1 John 1:8 and 1 John 1:9 as a result of their denial of the consequences of sin (Note: Some OSAS proponents do differ slightly on this belief).
Anyways, the confusion on your part (among other people who think the same way) is quickly cleared up if you and others were to read the New English Translation that says,
"If we say we do not bear the guilt [after-life consequence] of sin [if or when we do sin], we are deceiving ourselves and the truth is not in us." (1 John 1:8) (New English Translation).*
or if you were to read the Expanded Bible, that says,
"If we say we ·have no sin [or have no sin nature; or are not guilty of sinning [in the sense that we have no sin when we do sin]], we are ·fooling [deceiving] ourselves, and the truth is not in us."
(1 John 1:8) (Expanded Bible).*
Note: The words in the brackets are my further explanation to the above verses.
I hope this helps.
And may God bless you, as well.
Part 2
First, the OSAS Interpretation on 1 John 1:8 does not fit the context. Especially when John states, “He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.” (1 John 2:4).. In fact, we see no surrounding text tell us anything to support the idea that the truth is not in us if we say we are not always sinning.
Second, the idea of saying we are always in sin would not be true, either. It is very easy to not sin for a day and or even a week being a born again believer in Jesus Christ. We can retreat to a forest and we can pray for a week with God’s Word, or we can simply pray so as not to be led into temptation and remove ourselves from sinful things. If you do not think it is not possible to do such a thing, do you think a person can stop sinning for 5 minutes? How about an hour? If such is the case, then the OSAS interpretation on 1 John 1:8 is clearly false.
Three, as for 1 John 1:8 being a warning to the person who denies sin’s existence: This is basically a person saying that "sin" does not apply to them in regards to their right standing with God. For as I said before, 1 John 2:4 says the same thing, but using different words. 1 John 3:4 says “sin is transgression of the Law.” Laws are the same thing as Commands. So not keeping the Commandments is sin. In light of this fact, this is what 1 John 2:4 says, “He that saith, I know him, and keepeth not his commandments [i.e. sins], is a liar, and the truth is not in him.” In other words, when one says they walk with God and yet they sin, the truth is not in them because they are ignoring sin (by breaking the commandments) in their self professed walk with God. For he that commits sin is of the devil (1 John 3:8), and all who do evil hate the light (John 3:20).
Also, Christian Scientists think sin is an illusion and that it does not exist. OSAS Proponents think that for a believer in Jesus, all sin is paid for (Including present and future sins that are not confessed). But 1 John 1:9 says, “If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.” (1 John 1:9). So they deny the consequences of sin in relation to their right standing with God (Making it seem like sin has no effect in regards to their salvation). They deny confessing sins so as to be forgiven because they already believe they have been forgiven for all time (In regards to their right standing with God). But wouldn’t God have to agree with this wrong way of salvation or sin in order for such a plan of salvation to work? Can God agree with sin? Surely not. For God is good and all His ways are righteous and holy.
Four, who is the “WE” in 1 John chapter 1? The word “we” is an impersonal generic reference to everyone. While John was writing to certain believers warning them about the false gnostics who were trying to seduce them (1 John 2:26), we have to realize that the “we” is talking to all men. Please take note that I just said “we” in this last past sentence (using in the same way that John does). The Bible was ultimately written to all men. So while there are many instances where one writer is talking to a specific people or person, we also have to realize that many times their message had a wider application to ALL of mankind because it was to be divinely inspired Holy Scripture to lead man to have a right relationship with God.
Here is one way of stating 1 John 1:8 in the KJV,
“If we say that we have no sin [when we do sin], we deceive ourselves, and the truth is not in us” (1 John 1:8).
Here is another way of saying it,
“If we say that we have no sin [in the sense that sin does not apply to us or that sin does not exist], we deceive ourselves, and the truth is not in us.”
(1 John 1:8).
Anyways, I hope this helps.
May God's love and peace always be upon you.
Side Note:
All words in brackets are my commentary to Scripture.
Have a blessed day.
And take care.
….