Scribe 2 of 𝓞 accidentally omitted the and here, then later inserted it in the margin at the beginning of the line but with the same level of ink flow. This correction probably took place when scribe 2 read back the text to Joseph Smith (as part of the dictation process). As discussed under 1 Nephi 12:11, the connective and is characteristic of the Book of Mormon style and is expected here.