Mark 3:29
But he that shall blaspheme against the Holy Ghost has never forgiveness, but is in danger of eternal damnation.
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Matthew 12:31-32
Why I say to you, All manner of sin and blasphemy shall be forgiven to men: but the blasphemy against the Holy Ghost shall not be forgiven to men.
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Ephesians 4:30
And grieve not the holy Spirit of God, whereby you are sealed to the day of redemption.
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