Albert Barnes Commentary Jeremiah 22:30

"Thus saith Jehovah, Write ye this man childless, a man that shall not prosper in his days; for no more shall a man of his seed prosper, sitting upon the throne of David, and ruling in Judah." — Jeremiah 22:30 (ASV)

Childless - No child to sit on David’s throne. See 1 Chronicles 3:17 note.

Jeconiah was the last king of David’s line. His uncle indeed actually reigned after him, but perished with his sons long before Jeconiah’s death (literally 10): and yet from so dead a trunk, from a family so utterly fallen, that spiritual King came forth whose name is Yahweh our righteousness (Jeremiah 23:5–6).