How did the Byzantine Empire divide Palestine into administrative provinces?

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Panoramic view of a small valley with a stream, olive trees, and terraced hillsides in the countryside near Ramallah, Palestine, under a sky with scattered clouds. — Palestine View from a small valley with a stream between large hills of olive groves.

By the end of the 4th century CE, the Byzantine Empire had reorganized the region of Palestine into three distinct administrative provinces:

Palaestina Prima: Centered with its capital at Caesarea.
Palaestina Secunda: Centered with its capital at Scythopolis (modern-day Beit She'an).
Palaestina Salutaris (or Palaestina Tertia): Centered with its capital at Petra or possibly Elusa.

While these provinces were divided for civil administration, a single dux of Palestine maintained command over the military garrisons across all three territories. Additionally, by 451 CE, the bishop of Jerusalem was recognized as the patriarch overseeing these three provinces.1