Here's why:
* "Annas" is the name of the high priest.
* "the high priest" is the title.
In English, we usually place the title after the name.
Other possible variations include:
* "Annas, high priest of the Jews" (more formal and specific)
* "Annas, the former high priest" (if emphasizing his previous role)
The best choice will depend on the context and the desired level of formality.