In regards to the recent article link:
Nowhere does 1 John 3:6 and 1 John 3:9 says practice sin. The Modern Versions have made this addition. Paul makes it clear in Ephesians 2 and Colossians 3 that we USED to be sinners sinners but we are not that way anymore.
1 John 3:8 says he that sins is of the devil. It does not say he that sins habitually is of the devil. It only takes one sin to be of the devil and not many sins. For Jesus rebuked Peter and called him the devil for not being in line with His way of thinking with him going to the cross. 1 John 3:10 says he that does not righteousness is not of God. For he that hates his brother is a murderer and we know no murderer has etermal life abiding within them.
1 John 1:8 is dealing with the gnostic believer who thought there was no such thing as sin. I grew up knowing someone who was a Christian Scientist. They believed sin did not exist. This is similar to the OSAS proponent and their belief today. They do not believe sin exists for them because they are forgiven of all sins past, present, and future. Sin does not exist for them on a spiritual level. Their belief is very similar to the gnostic belief. The way the OSAS proponent gets out of this is by saying they sin on a physical level but yet on a spiritual level they have no sin (Because Christ paid it all). But this denies the next verse. 1 John 1:9 follows 1 John 1:8. One is supposed to confess their sin in order to be forgiven of their sin. The OSAS proponent does not believe 1 John 1:9 is in relation to salvation but they think it has to do with merely a break in fellowship (While they are still saved). But the Scriptures say, he that has the Son has life and he that does not have the Son does not have life (1 John 5:12). For you have to realize John was writing to the brethren and warning them about false deceivers (1 John 2:26). 1 John 2:4 and 1 John 1:6 is the context of 1 John 1:8.
As for Romans 7: Well, we have to ask ourselves: Who was Paul's audience? It was those believers who knew the law (i.e. the Law of Moses) (See Romans 7:1); For no doubt they were getting trippped up in the law of Moses by going back to it). This is the context because Paul mentions the topic of circumcision in Romans 2 (See Romans 2:25).
Now, do not misunderstand me. The Law or the Law of Moses is not the same thing as the Law of Christ (Galatians 6:2) or the Law of the Spirit of life in Christ Jesus (Romans 8:2). James calls it the royal law. Paul says that what he had written should be considered as the Lord's Commandments.
The Law of Moses is of the Old Testament and it is no longer binding.
The Law of Christ is of the New Testament and it was put into effect with Christ's death.
We also learn Paul says in Romans 7:14 that he is sold under sin and yet in Romans 8:2 he says he is free from sin. At the end of Romans 7 Paul gives us the solution to his struggle with sin.... who is Jesus Christ. This lets us know that in the bulk of Romans 7: Paul is speaking from his perspective as a Jew who kept the Law before he became a Christian. At the end of Romans 7 and in Romans 8 is when Paul is speaking from his experience as a Christian.