We should not be afraid to do research outside of the Bible. There are still many other things to be found, by doing so, that Jehovah’s people have yet to learn. To stop researching our Faith would be a big mistake. If we have “The Truth” than there is nothing to fear from such investigations. The trinitarians who say there is only one Bible the right one are giving several reasons for atheists and people against God to have enough proof to show them they are wrong also in their belief of God, because their sayings or words even do not match the bible words or ancient manuscript words and as such those people give a proof there would not exist a God.
Contrary to the sayings of KJV-only people, God has given His Word to all people in whatever language they speak and for eternally shedding light on His righteousness and honesty, His Word never telling lies. The Supreme Power also enables us to compare His Word like we can find it in print these days, with the ancient writings and original manuscripts which have been discovered by archaeologists after the 17th century.