You are wrong on two counts: (a) 1 John 5:7 is an integral part of that passage and Scripture, and this has been proven very effectively by many, and
It was never in the earliest manuscripts because it isn't true and does not belong there....though these words would have been most pertinent for trinitarians, early church writers never once used them.
The correct translation of 1 John 5:6-8 is....
"This is the one who came by means of water and blood, Jesus Christ, not with the water only, but with the water and with the blood. And the spirit is bearing witness, because the spirit is the truth. 7 For there are three witness bearers: 8 the spirit and the water and the blood; and the three are in agreement."
There never was a trinity in that passage. It is omitted by the American Standard Version, An American Translation, English Revised Version, Moffatt, New English Bible, Phillips, Rotherham, Revised Standard Version, Schonfield, Wade, Wand, Weymouth.
If recognized scholars who support the trinity insist that it doesn't belong.....who are you to argue with them? The Bible was not written in archaic English....nor does it contain any reference by God or his son expressing any kind of equality or co-eternity.
(2) "Holy Ghost" is also an integral part of Scripture and is an alternative name for the Holy Spirit. Even Luther's German has "Heilige Geist" which is an exact translation of "Holy Ghost", who is the third person of the Godhead.
There is no such thing as a "holy ghost"....the word "ghost" does not appear in any passage of scripture.
"Ghost" is based on the German word "geist" which means "spirit". Was the Bible written in German?
The"spirits" spoken about in the Bible are not "ghosts" as in former dead people. The only "spirits" in the Bible are those who belong to the angelic family of God who found themselves observing a battle between the Creator and his adversary, who was one of their own, turned traitor.
When the Bible speaks of good spirits and bad spirits...they were all angels. All who dwell in the spirit realm are spirits, including God and his son. The holy spirit is not an entity...it is "God's spirit"...it belongs to him, it emanates from him, but is not an entity of itself.
Not until the fourth century C.E. did the teaching that the holy spirit was a person and part of the “Godhead” become official church dogma. Can you tell me why it took over three hundred years for God to become a threesome?
The early church “fathers” did not teach about a triune god.
Justin Martyr of the second century C.E. taught that the holy spirit was an ‘influence or mode of operation of the Deity’.
Hippolytus likewise ascribed no personality to the holy spirit. The Scriptures themselves unite to show that God’s holy spirit is not a person but is God’s
power by which he accomplishes his purpose and executes his will.