You cannot prove that, No originals exist. Only Catholicism translating remained of NT when the protestants translated. Very few minor fragments are older, None of John 1:1
Still Dead to facts, indeed.
Saying “no originals exist” is meaningless—
no ancient document survives in its original form. What matters is the
manuscript evidence, and the New Testament is the most well-attested text in ancient history.
As for your claim about John 1:1—it's simply false.
We have
early Greek manuscripts of John that predate both Catholic and Protestant institutions as you’re framing them:
Papyrus 66 (c. AD 200) — contains large portions of the Gospel of John, including John 1.
Papyrus 75 (late 2nd–early 3rd century) — also contains John 1 and closely matches later manuscripts.
These
are not “Catholic translations”—they are
Greek manuscripts, copied long before medieval Catholic dominance or any Protestant movement.
And if that’s not enough,
Codex Vaticanus (4th century)
Codex Sinaiticus (4th century)
Both contain John 1:1 in Greek, and they agree substantially with those earlier papyri.
So no, your claim that “none of John 1:1 exists in early manuscripts” is simply incorrect!
The text of John 1:1 existed, was copied, and is preserved in
multiple independent Greek witnesses centuries before any later translation traditions.
If you want to challenge the verse, you’ll have to deal with the actual manuscripts—not dismiss them.