and the Spirit saith unto me [believeth >% believest 0|believest 1BCDEFGH|Believest AIJKLMNOPQRST] thou that thy father saw the tree
As discussed under 1 Nephi 11:2, scribe 3 of 𝓞 accidentally used the -eth ending here rather than the correct -est, perhaps under the influence of the preceding saith.
In this instance, he caught his error.