20 Jeroboam did not regain power during the time of Abijah. And the LORD struck him down and he died.

Read 2 Chronicles 13:20 Using Other Translations

Neither did Jeroboam recover strength again in the days of Abijah: and the LORD struck him, and he died.
Jeroboam did not recover his power in the days of Abijah. And the LORD struck him down, and he died.
So Jeroboam of Israel never regained his power during Abijah’s lifetime, and finally the LORD struck him down and he died.