Charles Ellicott Commentary 2 Kings 25:18

"And the captain of the guard took Seraiah the chief priest, and Zephaniah the second priest, and the three keepers of the threshold:" — 2 Kings 25:18 (ASV)

Seraiah the chief (high) priest. — Grandfather or great-grandfather of Ezra (1 Chronicles 6:14; Ezra 7:1).

Zephaniah the second priest. — See 2 Kings 23:4, Note; Jeremiah 21:1; Jeremiah 29:25; Jeremiah 29:29; and Jeremiah 37:3. From the last three passages it is clear that Zephaniah was a priest of high rank, probably the high priest’s deputy.

The three keepers of the door (threshold). — Chief warders of the principal entrances to the Temple. (See Jeremiah 38:13.) All the chief officials of the Temple were apparently taken away together.