As regards the Bible, it should be noted that "NONE" of the complete Biblical texts survived last long after the Apostles were killed. This is why the Nicean Council met. They were told to gather all the remaining fragments of the scriptures and get the religion back in order. They did the best they could, but the entirety of Jesus' gospel was lost. We were left with pieces. This is why we have so many denominations today.
When people claim the JWs made up their own Bible, consider the same thing would have been said about the Apostles, who made up their own Bible rather than stay strictly with the Holy Torah which had sustained God's people for over 1000 years.
People claim that JWs don't keep “so called” religious holidays like other Christians, but consider the Apostles, such as Paul, who said not to keeping traditional "man made" holidays. Are there any of today's religious holidays that are not man made? Also, consider that the Apostles kept in memorial the last supper, as Christ instructed, rather than continue keeping the Passover. Witnesses are the only religion that keeps the last supper in memorial.
In ancient times, Christian Jews were going door to door telling their former brethren that a change had taken place and that the Messiah had come. How many of those Jews would come up with reasons not to talk to them, hiding when they came to the door, or making up wild and false claims about them? Today, JWs go door to door trying to tell their brethren that a change has taken place and the second presence of Christ had come. Is history repeating itself?
Nearly 40000 years ago the Jews separated themselves from those around them, claiming their was just one Almighty God, and that they were the chosen people of God.
Nearly 2000 years ago, Christian Jews separated themselves from those around them, claiming that the Son of God, the Messiah, had come and that they were now the chosen people of God.
Now, a people has come forth from those around them, saying that Christ the King has returned and is now sitting upon his father’s throne, and yes, they claim that they are now God’s chosen people.
If they are wrong about that, than maybe the Apostle were also wrong 2000 years ago, and the Jews were wrong 4000 years ago, and there really is hundreds of Gods, or perhaps evolution is really the answer.