Here the 1892 RLDS edition replaced the present-tense commandeth with the past-tense commanded. The 1908 RLDS edition restored the present-tense form. In theory, either tense will work here, so we follow the earliest extant reading, the present-tense commandeth.
Summary: Maintain in 3 Nephi 16:10 the present-tense commandeth, the reading in 𝓟 and the 1830 edition (the two earliest textual sources for this part of the text).