en_tn/jer/22/30.md

He will be childless

Jehoiachin has several sons. This phrase, then, means it is as if he was childless. His children will not succeed him as king. Alternate translation: "It will be as if he did not have any children" (See: rc://en/ta/man/jit/figs-explicit)

sit on David's throne

Sitting on a throne is a metonym for ruling as king. Alternate translation: "become king" (See: rc://en/ta/man/jit/figs-metonymy)