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.