Wouldn’t it stand to reason that if you were inspired by God to write scripture that it would be at the top of your priority list of things to do? Why did Nephi ‘forget’ to write down the fulfillments of Samuel?
3 Nephi 23:10-13; “And his disciples answered him and said: Yea, Lord, Samuel did prophesy according to thy words, and they were all fulfilled. And Jesus said unto them: How be it that ye have not written this thing, that many saints did arise and appear unto many and did minister unto them? And it came to pass that Nephi remembered that this thing had not been written. And it came to pass that Jesus commanded that it should be written; therefore it was written according as he commanded.”