Bold is mine.MG 2.0 wrote: ↑Fri Nov 03, 2023 5:13 pmRegards,
In addition to his linguistic analysis, Skousen also provides a historical overview of the Book of Mormon's use of Isaiah. He argues that the Book of Mormon authors were likely familiar with the Septuagint, a Greek translation of the Old Testament that was widely used in the ancient world. Skousen also suggests that the Book of Mormon authors may have been influenced by Jewish apocalyptic literature, which also made use of Isaiah's prophecies.
Reference: Bard A.I.
MG
I think the Septuagint was translated in or around the Third Century BCE. According to the CoJCoLDS, Lehi and Co. arrived in the Americas around 600 BCE.