2 Kings 11:21

Jehoash Reigns in Judah

21
Ch 12:1 in Hebrew
bJehoash
 Jehoash is an alternate spelling of Joash (son of Ahaziah) as in verse 2
was seven years old when he began to reign.

2 Chronicles 24:1

Joash Repairs the Temple

1 dJoash
Spelled Jehoash in 2 Kings 12:1
was seven years old when he began to reign, and he reigned forty years in Jerusalem. His mother’s name was Zibiah of Beersheba.
Copyright information for ESV