You are stretching the text. Those that are born again can fall into mortal sin. Those born of God do not live a sinful lifestyle. That is they do not sin continuously. You referred to this as “(practices sin.)”
You need to put all of this into the context of scripture as a whole. John also has this to say about sin:
1 Jn 1:6-10
“If we say we have fellowship with him while we walk in darkness, we lie and do not live according to the truth; but if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin. If we say we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just, and will forgive our sins and cleanse us from all unrighteousness. If we say we have not sinned, we make him a liar, and his word is not in us.”
James is also very helpful in all of this. In James 5:19-20 it says:
“My brethren, if any one among you wanders from the truth and some one brings him back, let him know that whoever brings back a sinner from the error of his way will save his[the sinner’s] soul from death and will cover a multitude of sins.”
This verse is very clear in telling us that one of the Christian bretheren can wander from the truth, but can be brought back from the sinful error of his way, and that his soul can thus be saved from death. That is, he can be brought back from deadly or mortal sin.
You might also want to consider Revelation 2:18-23 which says:
"And to the angel of the church in Thyatira write: 'The words of the Son of God, who has eyes like a flame of fire, and whose feet are like burnished bronze. “'I know your works, your love and faith and service and patient endurance, and that your latter works exceed the first. But I have this against you, that you tolerate the woman Jezebel, who calls herself a prophetess and is teaching and beguiling my servants to practice immorality and to eat food sacrificed to idols. I gave her time to repent, but she refuses to repent of her immorality. Behold, I will throw her on a sickbed, and those who commit adultery with her I will throw into great tribulation, unless they repent of her doings; and I will strike her children dead. And all the churches shall know that I am he who searches mind and heart, and I will give to each of you as your works deserve.”
I could cite many more passages of scripture that demonstrate the point, but these should be sufficient.
I could explain all of your passages to you but you would not accept my answers to your passages. You cannot explain my passages that I would bring to you as your answers would contradict.
What you need to avoid is using works like “brethren” to connote that it is speaking of someone who, in fact, is a Christian that is in Christ. This passage in James can be likened to 1John 5:16…about the sin NOT leading to death. There are those in the midst of the brethren who are NOT born again. James 5 is for the purpose of some of those being saved because of our constant looking out for eathother.
Ultimately, you place no stock in Justification by faith alone. Where one is made righteous in Christ through the imputation of His righteousness to us while our sin is imputed to Him and we become married to Christ. It is on the basis of this relationship which comes by faith at the hearing of the gospel that we are declared righteous…
JUSTIFIED
1344 δικαιόω [dikaioo /dik·ah·yo·o/] v. From 1342; TDNT 2:211; TDNTA 168; GK 1467; 40 occurrences; AV translates as “justify” 37 times, “be freed” once, “be righteous” once, and “justifier” once. 1 to render righteous or such he ought to be. 2 to show, exhibit, evince, one to be righteous, such as he is and wishes himself to be considered. 3
to declare, pronounce, one to be just, righteous, or such as he ought to be.
Strong, James: The Exhaustive Concordance of the Bible : Showing Every Word of the Text of the Common English Version of the Canonical Books, and Every Occurrence of Each Word in Regular Order. electronic ed. Ontario : Woodside Bible Fellowship., 1996, S. G1344
It seems this does not matter to someone like yourself. Once perfected…once a sheep we cannot be plucked out of the hands of God…
“My sheep hear My voice, and I know them, and they follow Me. And I give them eternal life, and they shall never perish; neither shall anyone snatch them out of My hand. My Father, who has given them to Me, is greater than all; and no one is able to snatch them out of My Father’s hand.” (John 10:27-29, NKJV)
I can say this…concerning a Christian…
“For by one offering He has perfected forever those who are being sanctified.” (Hebrews 10:14, NKJV)
Those who are beiong sanctified - are true Christians - have been perfected forever. Perfected applies to the one being sanctified…forever applies to the one being sanctified.
No condemnation - those that have passed from death to life - SHALL NOT come into condemnation.
““Most assuredly, I say to you, he who hears My word and believes in Him who sent Me has everlasting life, and shall not come into judgment, but has passed from death into life.” (John 5:24, NKJV)