Where does “Iūdaeus” come from?

Iūdaeus (Latin) comes from Ancient Greek Ἰουδαῖος, from Ancient Greek Ἰουδά, from Hebrew יְהוּדָה — Judas; Judah, Judas.

Ancestry of “Iūdaeus”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Ἰουδαῖος	Jew or Judean
2	Ancient Greek	Ἰουδά	Judah
3	Hebrew	יְהוּדָה	Judas; Judah, Judas