Iesus Nazarenus Rex Iudaeorum
᾽Ιησοῦς ὁ Ναζωραῖος ὁ βασιλεὺς τῶν ᾽Ιουδαίων
יֵשׁוּעַ הַנָּצְרִי מֶלֶךְ הַיְּהוּדִים Or ܝܼܫܘܿܥ ܢܵܨܪܵܝܵܐ ܡܲܠܟܵܐ ܕܝܼܗܘܼܕܵܝܵܐ
Hebrew or Aramaic, depending on how you interpret the word the Greek word “Hebraisti (Ἑβραϊστί )” in John 19:20. Aramaic was a common language (along with Greek) of the area at the time, and a likely choice. However, Pilate was highly displeased with the Jewish Sanhedrin, and may have had it written in Hebrew, their ecclesiastical language (and is explicitly a Jewish language), as a dig at them specifically. Which considering their response, may have hit the mark. There is, I think, significant evidence to believe it is written in Hebrew.
