If a man commits a sin, he is accountable for it.
Only if he has never placed his trust in Christ.
If he has, then all God sees when he looks at the man is Christ, because Christ is our covering.
What happened to the man who committed adultery with his dad's wife?
He was tossed out of the church !
But he wasn't deemed unsaved.
He was cast out because immorality defiles the church, just like a little leaven leavens the whole lump.
Listen to what Paul said:
It is actually reported that there is sexual immorality among you, and such sexual immorality as is not even named among the Gentiles—that a man has his father’s wife!And you are puffed up, and have not rather mourned, that he who has done this deed might be taken away from among you.For I indeed, as absent in body but present in spirit, have already judged (as though I were present) him who has so done this deed.In the name of our Lord Jesus Christ, when you are gathered together, along with my spirit, with the power of our Lord Jesus Christ,deliver such a one to Satan for the destruction of the flesh, that his spirit may be saved in the day of the Lord Jesus.Your glorying is not good. Do you not know that a little leaven leavens the whole lump?Therefore purge out the old leaven, that you may be a new lump, since you truly are unleavened. For indeed Christ, our Passover, was sacrificed for us.Therefore let us keep the feast, not with old leaven, nor with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.I wrote to you in my epistle not to keep company with sexually immoral people.Yet I certainly did not mean with the sexually immoral people of this world, or with the covetous, or extortioners, or idolaters, since then you would need to go out of the world.But now I have written to you not to keep company with anyone named a brother, who is sexually immoral, or covetous, or an idolater, or a reviler, or a drunkard, or an extortioner— not even to eat with such a person.For what have I to do with judging those also who are outside? Do you not judge those who are inside?But those who are outside God judges. Therefore “put away from yourselves the evil person.” - 1 Corinthians 5:1-13
http://www.biblegateway.com/passage/?search=1Corinthians5:1-13&version=NKJV
How about Ananias and Saphira?
Killed on the spot!
For their unbelief, and lying to the Holy Spirit, under the New Covenant, where perseverance was a requirement.
If a man commits a sin, it manifests that he was neither converted, reborn, repentant, or a Christ follower.
Did you not notice that Paul NEVER called the man who committed adultery with his father's wife an unbeliever?
In fact, the way he worded what he said, it's impossible for him to NOT be a believer.
I wrote to you in my epistle not to keep company with sexually immoral people.Yet I certainly did not mean with the sexually immoral people of this world, or with the covetous, or extortioners, or idolaters, since then you would need to go out of the world.
But now I have written to you not to keep company with anyone named a brother, who is sexually immoral, or covetous, or an idolater, or a reviler, or a drunkard, or an extortioner— not even to eat with such a person.For what have I to do with judging those also who are outside? Do you not judge those who are inside?But those who are outside God judges. Therefore “put away from yourselves the evil person.” - 1 Corinthians 5:9-13
http://www.biblegateway.com/passage/?search=1Corinthians5:9-13&version=NKJV
As Jesus made clear from the scripture you misquoted, (John 8:32-34), the truth can free us from committing sin.
Jesus was speaking to Israel.
Not the Body of Christ.
Isn't it those who use Christ as an accommodation for wickedness who are the blasphemers?
They accredit their sin to Jesus.
Paul was accused of the same thing you're accusing Musty of, Hoping.
For if the truth of God has increased through my lie to His glory, why am I also still judged as a sinner?And why not say, “Let us do evil that good may come”?—as we are slanderously reported and as some affirm that we say. Their condemnation is just. - Romans 3:7-8
http://www.biblegateway.com/passage/?search=Romans3:7-8&version=NKJV
We're not saying it's ok to sin, just because we're covered by grace.
The answer to your accusation?
“But if, while we seek to be justified by Christ, we ourselves also are found sinners, is Christ therefore a minister of sin? Certainly not! - Galatians 2:17
http://www.biblegateway.com/passage/?search=Galatians2:17&version=NKJV
Please read this:
Why does Christ’s righteousness need to be imputed to us? What is imputation? Why, on the basis of Christ’s death, can God declare us to be righteous?
www.gotquestions.org