As he copied from 𝓞 into 𝓟, Oliver Cowdery initially wrote “the Messiah will set himself again to recover them”; then he supralinearly inserted the phrase “the second time”. The correction appears to be virtually immediate since there is no change in the level of ink flow. The original manuscript undoubtedly read “the Messiah will set himself again the second time to recover them”.
Jacob’s language here in verse 14 refers not to Isaiah 49:22–23 (which he just quoted in 2 Nephi 6:6–7), but to an Isaiah passage quoted later by Nephi:
This prophecy of Isaiah’s is again referred to later on by both Nephi and Jacob:
Thus in 2 Nephi 6:14, when Jacob says “according to the words of the prophet”, he is undoubtedly referring to Isaiah (and the prophecy in Isaiah 11:11). For this reason we can be confident that the original manuscript had “the second time”.
Summary: Maintain the phrase “the second time” that Oliver Cowdery supralinearly inserted in 2 Nephi 6:14; his correction here undoubtedly represents the reading of the original text, which paraphrases Isaiah 11:11.