No, they have not repented is they keep living in sin.
And if they die in that condition without having repented and turned away from their sin, they will not go to Heaven.
When one turns away from the Lord and sins, they must forsake their sin and confess their sin to the Lord in order to be in right standing with the Lord once again according to His Word.
Proverbs 28:13
He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy.
1 John 1:9
If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
If one commits blasphemy the Holy Spirit, then they HAVE denied the Lord and His Holy Spirit and they will not be saved in the end. They are done.
The Word of God tells us of another sin that is not forgiven which is obviously blasphemy the Holy Spirit and that is taking the mark of the beast:
Revelation 14:9-11
And the third angel followed them, saying with a loud voice, If ANY MAN worship the beast and his image, and receive his mark in his forehead, or in his hand,
The same shall drink of the wine of the wrath of God, which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb:
And the smoke of their torment ascendeth up for ever and ever: and they have no rest day nor night, who worship the beast and his image, and whosoever receiveth the mark of his name.
Since Jesus said the only sin not forgivable is blaspheming the Holy Ghost (Matthew 12:31), some claim this means if a Christian takes the mark of the beast which includes worshiping the beast they will still go to Heaven.
Jesus specifically tells us in Revelation 14:9-11 that taking the mark of the beast will in fact send one to hell so it's very obvious that Jesus considers taking the mark of the beast to be blaspheming the Holy Ghost, and here's why:
1 Corinthians 6:19,20
What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own?
For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God's.
Romans 12:1,2
I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.
And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.
A Christians has NO right to turn away from the Lord and submit themselves and their body to the beast by taking his mark which is to be in agreement with the beast which is worship unto the beast.
Those taking the mark of the beast are in fact blaspheming the Holy Ghost and those that say it is not are considering what Jesus said in Revelation 14:9-11 to be a lie.
Things never end well for those that think Jesus lied and think they can go their own way and do their own will while rejecting His will for their lives.
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