All his house died together - This does not mean the whole of his family, nor even “all his sons” (see 2 Samuel 2:8–15; [Referen…

And all his house died together. —Instead of this, Samuel reads, and his armour-bearer; also all his men on that day …

(See Gill on 1 Samuel 31:6)

The primary design of these books of the Chronicles appears to be to preserve the records of the house of David. Therefore, the writer does not rep…