Charles Ellicott Commentary 2 Kings 13:9

"And Jehoahaz slept with his fathers; and they buried him in Samaria: and Joash his son reigned in his stead." — 2 Kings 13:9 (ASV)

Slept with his fathers. —Or, lay down (i.e., to sleep) like his fathers, i.e., as his fathers had done before him. The same phrase is used even of Amaziah, who came to a violent end (2 Kings 14:22).