2 Nephi 3:14-15

“And thus prophesied Joseph, saying: Behold, that seer will the Lord bless; and they that seek to destroy him shall be confounded; for this promise, which I have obtained of the Lord, of the fruit of my loins, shall be fulfilled.  Behold, I am sure of the fulfilling of this promise; And his name shall be called after me; and it shall be after the name of his father.  And he shall be like unto me; for the thing, which the Lord shall bring forth by his hand, by the power of the Lord shall bring my people unto salvation.”

Who is that prophesy referring to?

Latter-Day Saints believe it was speaking into the future of Joseph Smith.

This passage is from the Book of Mormon for which we know there are no ancient documents or records to verify. 

And what’s the correlation?

You’ll need to read from the Joseph Smith Translation Genesis 50:33

“And that seer will I bless, and they that seek to destroy him shall be confounded; for this promise I given unto you; for I will remember you from generation to generation; and his name shall be called Joseph, and it shall be after the name of his father; and he shall be like unto you; for the thing which the Lord shall bring forth by his hand shall bring my people unto salvation.”