Like I said before:The way I understand this passage is that “death” refers here to physical death, because John is writing to believers and we know that the child of God has eternal life. John is saying that believers can commit a sin for which their heavenly Father will remove them from this life physically, perhaps because they are disgracing Him, perhaps to stop further sinning... Look for example at Ananias and Sapphira in the book of Acts. They were were guilty of a lie and God chose to end their lives.
It is possible this reference supports what you state:
1 Corinthians 5:1-5 NASB
It is actually reported that there is immorality among you, and immorality of such a kind as does not exist even among the Gentiles, that someone has his father’s wife. You have become arrogant and have not mourned instead, so that the one who had done this deed would be removed from your midst. For I, on my part, though absent in body but present in spirit, have already judged him who has so committed this, as though I were present. In the name of our Lord Jesus, when you are assembled, and I with you in spirit, with the power of our Lord Jesus, I have decided to deliver such a one to Satan for the destruction of his flesh, so that his spirit may be saved in the day of the Lord Jesus.