Scribe 2 of 𝓟 initially omitted the narrative adverb now; almost immediately he supralinearly inserted the now. Elsewhere in the text there are over a hundred instances of “and now behold” and almost three hundred of “and behold”, so either reading is clearly possible. The critical text will therefore accept the corrected reading in 𝓟 as the original reading here. For another example of the accidental loss of the narrative adverb now, see under 1 Nephi 19:4.
Summary: Maintain in Alma 5:6 the now that scribe 2 supralinearly inserted after the conjunction and.