Thank you for the question on revisions of the Bible, “Is it true that the Bible is revised regularly? What institution in the world has the authority to do that?”
For your consideration, there is a distinction between translations of the Bible and revisions of the Bible. The Bible is regularly translated into more contemporary English or in another language so that readers can understand the words of the Bible.
There is the literal translation of the Bible from the Hebrew, Greek, and Aramaic as the NASB and there is the dynamic translation of the Bible as the NIV. Bible publishers as the Bible Society would from time to time provide a more modern wording for readers.
As to revision of the Bible, Bible scholars who compare varies parchments, scrolls from other scrolls or parchment in their attempt to discern the original autograph of a particular book. For example, the discovery of the Dead Sea Scroll allows Hebrew scholars to note the differences and to give their opinion on a biblical text.
The gathering of biblical texts from around the world is being done so that a comparison can be made of the various texts. Today, it is believed by biblical scholars that that we have about 99% certainty of the original text.
If one agrees or disagrees with the revised biblical text, one ought to know the reason why one agrees or disagrees. Bible scholars give their “expert” opinion as they study the word usage, the context, and biblical texts on that passage.
-Kingston