Satan is not sin. Satan sins. Men sin. Some angels sinned and can sin again. Sin is not a nature, not a being. It is unrighteousness, simple as that.@Dave,
The Holy Ghost is not convicting a believer of sin; the Spirit is conviction the “world” of sin. Of sin because the people of the world “do not” believe. This is why the people killed Stephen because they were convicted in themselves by what he was preaching (Acts 7:54).
Joh 16:8 And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:
Joh 16:9 Of sin, because they believe not on me (Jesus);
Joh 16:10 Of righteousness, because I go to my Father, and you see me no more;
Joh 16:11 Of judgment, because “the prince of this world is judged.”
Joh 12:31 Now is the judgment of this world: now shall the prince of this world be cast out.
This is talking about Satan being being judged and cast out of the hearts of those that will believe. Satan is the nature of sin and this is where the old nature is cast out of a man's heart. Once Jesus finished His work, every believer received a new heart and a new Spirit.
Rom 8:3 For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin (Satan), condemned sin in the flesh:
Eze 36:26 A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh.
The old heart was of the sinful nature of Adam. The new heart is of the sinless Righteois nature of Jesus Christ.
1 John 5:16-17 (KJV)
16 If any man see his brother sin a sin which is not unto death, he shall ask, and he shall give him life for them that sin not unto death. There is a sin unto death: I do not say that he shall pray for it.
17 All unrighteousness is sin: and there is a sin not unto death.
There are sins that don't involve Satan taking over a person's heart. God in, God out, Satan in, Satan out, etc.? Is that your doctrine, or are you of the once saved then once sinned, always lost crowd? Again, I posted yesterday about Paul having to upbraid Peter, who was born again by that time, who committed hypocracy. Would you say from then on Satan took over Peter's eternal destiny? I wouldn't. Paul saw or heard of the sin, went to Peter directly, and that took care of that.