The Hebrew/Aramaic noun segan refers to a prefect, deputy, or senior official — one who holds a position of authority under a king or governor. Occurring about 17 times, it appears in contexts of civic and religious administration in Babylon (Daniel), Persian period (Ezra/Nehemiah), and pre-exilic Israel.
Segan illustrates biblical governance: God ordains human authorities to maintain order (Romans 13:1–7). In Ezra and Nehemiah, the seganim (prefects) are those who participate in covenant renewal — even officials are called to submit to God's law. Daniel's story shows that even under foreign seganim, God's people can maintain integrity. The presence of structured authority in Babylon and Persia was not outside God's sovereignty but within it.