Sin; what sin?

Romans 6:14a [Authorized King James Version]:  "For sin shall not have dominion over you:"  So then if sin "shall not" it has to be a conscious decision to do or not to do.  The more knowledge one has of God's Word the less apt one is to sin, exercise unbelief: "And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:  Of sin, because they believe not on me; Of righteousness, because I go to my Father, and ye see me no more;  Of judgment, because the prince of this world is judged." John 16:8-11.  Verse 9 states that the sin, the worlds sin [from verse 8] is unbelief in Him and of His death, burial and resurrection (DBR) for the payment of ones sin.  That is the gospel that is presented for salvation now!  "If ye have heard of the dispensation of the grace of God which is given me to you-ward:" Ephesians 3:2.  

"But now being made free from sin, and become servants to God, ye have your fruit unto holiness, and the end everlasting life." Romans 4:22  Notice it says "But now being made free from sin,"  Doesn't mean one will no longer sin but one is being made free.  "The sting of death is sin; and the strength of sin is the law."  To me that is learning how to believe, trust and hope in the LORD Jesus Christ.  "That I should be the minister of Jesus Christ to the Gentiles, ministering the gospel of God [DBR], that the offering up of the Gentiles might be acceptable, being sanctified by the Holy Ghost." As an ambassador, minister I am being sanctified [Phili 2:13] and that takes a long time for the Holy Spirit to do because of my continuing unbelief due to the lack knowledge.  But by being in Christ I have forgiveness {Eph 1:7, Col 1:14].

"For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord."  The wages of my sin was; note, was death but by believing in His DBR I am made a new creation [2 Cor 5:17]; am sealed [Eph 1:11-14]; and blessed [Eph 1:3] and written else where . Spiritual death has no power over me being in Christ.  The wages of sin still exists apart from Christ.  When one fails to believe does one die again and need to be given life again?  "Who is he that condemneth? It is Christ that died, yea rather, that is risen again, who is even at the right hand of God, who also maketh intercession for us." Romans 8:34.  "For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself."  Hebrews 9:26.

"When Jesus therefore had received the vinegar, he said, It is finished: and he bowed his head, and gave up the ghost." John 19:30. What is finished?  "For if we sin wilfully [exercise unbelief in what He has written] after that we have received the knowledge of the truth {His Word] , there remaineth no more sacrifice for sins [to be made after His finished Work].  So when one fails to believe that it [sin] is finished there isn't another sacrifice to be offered for sin.  If after Christ was crucified, buried and and then hadn't risen one would still be dead in their sin [1 Cor 15:17]

"O wretched man that I am! who shall deliver me from the body of this death?"  Romans 7:24.  The answer; believing in the LORD's  Death, Burial and Resurrection; please believe the gospel and live.