1 My little children, these things I write to you, so that you may not sin. And if anyone sins, we have an Advocate with the Father, Jesus Christ the righteous. 2 And He Himself is the propitiation for our sins, and not for ours only but also for the whole world. (1 John 2:1–2, NKJV)
When we say “we have no sin” at least three things happen: We deceive ourselves, the truth is not in us, and we make God a liar (1 John 1:8-10). The fact is we have all chosen to sin (“all have sinned”). We were not born sinners. We do not have a sin nature that forces us to sin. Sin is a choice we make (1 John 3:4; Romans 7:7-11). Although we have sinned, God’s will is that we “may not sin” (1 John 2:1). God wants us to sin less and less. To deny sin’s reality is a lie. When we confess our sins, we are assured of forgiveness and cleansing because we have “an Advocate with the Father, Jesus Christ the righteous” (1 John 1:9; 2:1). As our Advocate He pleads our case before the Father. As the propitiation for our sins, His blood is offered to God as the sacrifice that appeases divine wrath against our sins. Jesus is our Advocate and the propitiation for our sins, not so we can ignore our sins, excuse our sins, deny our sins or continue practicing sin. He is these things so we will confess our sins and practice the truth rather than walk in the darkness of sin (1 John 1:6-9). “Therefore do not let sin reign in your mortal body, that you should obey it in its lusts” (Romans 6:12).