1Jn 1:7 But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son
cleanses us from all sin.
...
1Jn 1:9
If we confess our sins, he is faithful and just to forgive us our sins and to
cleanse us from all unrighteousness.
...
1Jn 2:1 My little children, I am writing these things to you so that you may not sin. But
if anyone does sin,
we have an advocate with the Father, Jesus Christ the righteous. (ESV)
First, note that in 2:1, which clearly ties into what he just said in chapter 1 (it is one continuous letter, after all), John refers to those he is writing to as "My little children." This is not a term for unbelievers, but a term of affection for believers that are likely his spiritual children.
Second, John certainly seemed to think that he was a sinner, along with every other believer:
1Jn 1:1 That which was from the beginning, which
we have heard, which
we have seen with
our eyes, which
we looked upon and have touched with
our hands, concerning the word of life—
1Jn 1:2 the life was made manifest, and
we have seen it, and testify to it and proclaim to you the eternal life, which was with the Father and was made manifest to
us—
1Jn 1:3 that which
we have seen and heard
we proclaim also to you, so that you too may have fellowship with
us; and indeed
our fellowship is with the Father and with his Son Jesus Christ.
1Jn 1:4 And
we are writing these things so that
our joy may be complete.
1Jn 1:5 This is the message
we have heard from him and proclaim to you, that God is light, and in him is no darkness at all.
1Jn 1:6 If
we say
we have fellowship with him while
we walk in darkness,
we lie and do not practice the truth.
1Jn 1:7 But if
we walk in the light, as he is in the light,
we have fellowship with
one another, and the blood of Jesus his Son cleanses
us from all sin.
1Jn 1:8 If
we say
we have no sin,
we deceive
ourselves, and the truth is not in
us.
1Jn 1:9 If
we confess
our sins, he is faithful and just to forgive
us our sins and to cleanse
us from all unrighteousness.
1Jn 1:10 If
we say
we have not sinned,
we make him a liar, and his word is not in
us. (ESV)
Third, John's use of the verb "confess" in
1:9 is in the "present subjunctive, speaking of continuous action." The translation of this verse given in Wuest's
Word Studies in the Greek New Testament, is: "If we continue to confess our sins, faithful is He and righteous to forgive us our sins and to cleanse us from every unrighteousness."
Fourth, John uses the plural "sins" in 1:9. This supports his claim that "if we [continually] confess our sins," God will forgive and cleanse us. We need to be continually confessing our sins, according to John.
Fifth, John says that believers sin and anyone who claims to be without is self-deceived, doesn’t have the truth, and makes God a liar and his word isn’t in them.:
1Jn 1:8 If
we say we have no sin,
we deceive ourselves, and
the truth is not in us.
...
1Jn 1:10 If
we say we have not sinned,
we make him a liar, and
his word is not in us. (ESV)
Those are some very strong cautions for any believer who claims to be without sin.
John certainly seems to consider himself and all believers as sinners that need to confess their sins continually before God. He knows that living sinless in this life just isn't possible and that is why we need to continually confess and why we have an advocate with the Father.
Do you agree that context is important?
1Jn 5:16 If anyone
sees his brother committing a sin not leading to death, he shall ask, and God will give him life—
to those who commit sins that do not lead to death. There is sin that leads to death; I do not say that one should pray for that. (ESV)
John explicitly says that believers commit sin. We should also consider what he says in chapter 3:
Both Wuest's
Word Studies in the Greek New Testament and
The Expositor's Greek Testament show that the Greek grammar of
1 John 3:6,
8, and
9 is also talking about continuous and habitual action:
1Jn 3:6 No one who abides in him keeps on sinning; no one who keeps on sinning has either seen him or known him.
1Jn 3:7 Little children, let no one deceive you. Whoever practices righteousness is righteous, as he is righteous.
1Jn 3:8 Whoever makes a practice of sinning is of the devil, for the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the works of the devil.
1Jn 3:9 No one born of God makes a practice of sinning, for God's seed abides in him; and he cannot keep on sinning, because he has been born of God. (ESV)
Why would John say that? Because he is simply repeating what Jesus said, as recorded by him, in
John 8:34:
Joh 8:34 Jesus answered them, “Truly, truly, I say to you, everyone who practices sin is a slave to sin. (ESV)
"The Greek grammar here is such that Jesus is speaking of those who constantly do sin, who live in sin" (Hendriksen,
New Testament Commentary: John, p. 53).
John has already stated in chapter 1 and 2 that believers sin, and repeats that in chapter 5. So, who John is speaking of in 1 John 3:4-10? Those who live a willfully sinful lifestyle, those whose lives are characterized by sin; they cannot be believers. Yet he makes the case that believers do sin. It's just that their lives are not characterized by it--they confess their sins because they have an advocate before the Father.