Deuteronomy 2:20-23 -

Another parenthetical insertion, containing some ethnographical notices, intended, probably, to confirm the assertion that to the children of Ammon God had given their land for a possession. There is no sufficient reason for supposing that this paragraph is an interpolation, or gloss, inserted by some later writer. It lay as much in the way of Moses to introduce such ethnographical notices as in that of any writer of a later age.