Called to Judge with Christ

According to St. Thomas Aquinas, the elect will judge with Christ not by usurping divine authority, but by consent, equivalence, and participation in His judicial dignity at the Last Judgement.

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?