There are more differences among the manuscripts than there are words in the New Testament
The objection
Bart Ehrman put this at the front of Misquoting Jesus (HarperSanFrancisco, 2005), and it is not a trick — it is a fact about the evidence. When you have thousands of hand-copied manuscripts, the places where they disagree pile up faster than the words in the book, because each manuscript contributes its own slips. And the reassurance that most are trivial cuts less than apologists think: you cannot know which differences are trivial until you have already decided what the original said, which is the very thing in question. Ehrman's sharper point is that some of the changes look deliberate and theological — scribes adjusting a passage to protect a doctrine — and those are the ones that matter.
The response
Two parts, and the first is a straight concession. The count is real and Christians should stop being surprised by it. It is what abundance produces: more copies means more variants, and a book preserved in three manuscripts would have a much prettier number and a much worse text. The second part is where the objection is answerable. Ehrman's own textbook practice — he is a working text critic, not only a popular writer — is to weigh readings by manuscript age, geographical spread, and which reading better explains the origin of the others. Those are the ordinary tools, they work, and applying them is how we know which variants are trivial. On the deliberate theological changes: he is right that some exist, and this page will not pretend otherwise. What is disputed is their weight. The changes he documents are mostly cases where a later scribe made an existing orthodox reading more explicit — which is a real phenomenon and a very different thing from inventing a doctrine. And every one of the passages under discussion is printed in the apparatus of every critical edition, argued in public, and available to any reader who wants to check. A cover-up that publishes its own evidence is not much of a cover-up.