New Testament is a collection of 27 scrolls (books) by nine writters in 20-50 year time period
Like significant literature of the day, we use surviving manuscripts to reconstruct the orginal
There are more than 5,800 Greek manuscripts and 20,000 in our languages being full or parts of the Bible
Many were written soon after the orginals AD117-138
Many of the manuscripts were destoryed because of Roman persecution
Even if did have any manuscripts, we could reconstruct the new testament from the early church writtings. All but 11 verses of the new testament was quoted by them
Most other ancient works have fewer than a dozen copies and yet few historians question those works
It might be best that there is only the orginals, having many copies protects the text via copy confirmation - much like bitcoin
No other ancient book is so well authenticated - 99.5% accurate; .5% has no effect on a single doctrine