Jeremiah 21:1 shows Zephaniah earlier as a priest sent by King Zedekiah to Jeremiah.

Jeremiah 29:29 recounts Zephaniah reading the letter to Jeremiah, showing his active participation.

Jeremiah 37:3 records Zephaniah being sent by Zedekiah to ask Jeremiah to pray.

Jeremiah 21:7 prophesies all delivered to Nebuchadnezzar — here the chief priest and second priest are taken, fulfilling that word.

Jeremiah 34:21 predicts leaders given to Babylon's army — here temple leaders are specifically taken, a partial fulfillment.

2 Kings 25:18 gives an identical account of Seraiah, Zephaniah, and the three doorkeepers being taken.

Ezra 7:1 traces Ezra's lineage back to this Seraiah, linking the post-exilic leader to the exilic priesthood.