[kosta50]

NKJV is very close to the Latin Vulgate. St. Jerome must have use a different Greek source. Here is the Latin source tranlated by Google

First of all how do you know this is Jerome's version? The new Vulgate (in Latin) is not the Jerome's original.

Besides, I don't know what version of Isaiah 9 Jerome use for his translation, considering that he did not write the OT based on the LXX but on the Masoretic Text (MT), and most Jewish versions of the English Hebrew Bible quote Isaiah 9:5 as

For a child is born unto us, a son is given unto us; and the government is upon his shoulder; and his name is called Pele-joez-el-gibbor-Abi-ad-sar-shalom

Whatever that name is, the NKJV is not following the LXX or the MT.

[count-your-change]

” Pele-joez-el-gibbor-Abi-ad-sar-shalom” is not a name, it’s just left untranslated for whatever reason.