A “Betrayal” of the Bible?

Its text was the most copied in history and a favourite among those chosen for printing. Spread throughout the world, in the Middle Ages it became the great stylebook and inspiration for writers, scholars, and sages.
How Did the Bible Come Down To Us?

The originals have not been conserved, nor many of the subsequent copies, of the 73 books of the Bible. Then how did the Word of God contained within them come down to us intact?