OK, just a few examples
1 Nephi 5, p. 52
O house of Jacob, which are called out of the waters of Judah, which swear by the name of the Lord
[View the 1830 Book of Mormon text - http://www.irr.org/mit/1830bom-cs-p52.html]
1 Nephi 20:1
O house of Jacob, which are called out of the waters of Judah, or out of the waters of baptism, which swear by the name of the Lord
2 Nephi 12, p. 117
and many generations shall not pass away among them, save they shall be a white and a delightsome people.
[View the 1830 Book of Mormon text- http://www.irr.org/mit/1830bom-cs-p117.html]
2 Nephi 30:6 (1840 edition)
and many generations shall not pass away among them, save they shall be a white pure and a delightsome people.
(Later editions until 1981)
white and delightsome
(1981 to current edition) pure and delightsome
On the other hand, the passage in 1 John cited by most believers in the Nicene Creed, called the Johannine Comma, is now universally recognized as having been added hundreds of years after the fact by a monk.
Yes, the comma has been identified for a number of years. Are you aware that in Smith's inspired edition of the bible - the JST (aka the Inspired Version) - the Johannine comma is left intact? Apparently the revelation that Smith received maintained that piece of scripture unaltered.
I don't know that we teach that...
--MormonDude(I don't know a LOT of stuff that conflicts with my belief system.)