Have you ever held a P45 in your hand? Most likely you have, and it is the document you were given when you left a job in the UK. A P45 refers to things like the tax you have paid on earnings.
However, there is another P45 that refers to one of the earliest surviving New Testament documents. Dated to around AD 200 it includes parts of the four Gospels and the Book of Acts. It is enormously important to reconstructing what was originally written by the apostles and their friends. While substantially in agreement with the later manuscripts that the Authorised King James Version was based upon, there are enough variations to help clarify the original text.
You might come across such evidence from time to time and wonder why it is given such a dull label as “P45”. It is an interesting story.