John Gill Commentary 1 Kings 15:8

"And Abijam slept with his fathers; and they buried him in the city of David: and Asa his son reigned in his stead." — 1 Kings 15:8 (ASV)

And Abijam slept with his fathers
That is, died as they did:

and they buried him in the city of David ,
in the sepulchre of his royal ancestors, David, Solomon, and Rehoboam:

and Asa his son reigned in his stead ;
who perhaps was the eldest of his twenty two sons, (2 Chronicles 13:21) .