In the days of the early Christians, there were many writings about the life of Jesus.
But some special quality - they are written by the disciples of Jesus or close friends. These gospels and letters were carefully copied by hand.
Over the years, archaeologists have found thousands of manuscripts of bits of the New Testament and even a full copy.
By comparing these, we look very carefully that the New Testament writers originally wrote.
Some of these copies of less than 100 years after the original gospel or letter was written.
To get an idea of how this information is good to compare with other New Testament writings are almost as old as the New Testament.
For example, Julius Caesar wrote a book entitled The French war some 50 years before Jesus Christ was born.
Obviously we do not have the original.
However, we have nine or ten copies, and the first of these events was about 900 years after the original.
This is a variation on the ancient scriptures. However, when looking at historical data on the Bible, we learn that there are thousands of manuscripts of the New Testament books.
Therefore, we have reasonable grounds to believe that we know almost exactly what
Luke,
Paul and
others have written.