There are too many examples. I’ll just give you two to show you that this is not false nonsense.
1 Nephi 11:18 (1830 Edition)
"And he said unto me, Behold, the virgin which thou seest, is the mother of God, after the manner of the flesh
1 Nephi 11:18 (1981 Edition)
“And he said unto me: Behold, the virgin whom thou seest is the mother of the Son of God, after the manner of the flesh.”
1 Nephi 13:40 (1830)
" . . . and shall make known to all kindreds, tongues, and people, that the Lamb of God is the Eternal Father and the Savior of the world . . . "
1 Nephi 13:40 (1981)
" . . . and shall make known to all kindreds, tongues, and people that the Lamb of God is the Son of the Eternal Father, and the Savior of the World . . . "
Doctrinal changes . . .