Textus Receptus contains several textual errors and additions over time

It's entirely possible that the Textus Receptus, the Greek text that formed the basis for many English translations like the King James Version, contains additional words that were not originally part of the biblical text.   

The Johannine Comma is a prime example of this. This passage, 1 John 5:7-8, is absent from the earliest and most reliable Greek manuscripts. It appears to have been added later, possibly in Latin translations. Its inclusion in the Textus Receptus highlights the potential for textual errors and additions over time.  

While the Johannine Comma is a particularly well-known example, it's important to note that textual criticism is a complex field, and scholars continue to debate the exact wording of the original biblical text. Modern translations are based on careful analysis of multiple ancient manuscripts and seek to provide the most accurate rendering of the original text.

Therefore, while the Textus Receptus has historical significance, it's not considered the most reliable source for the original text of the New Testament.