1 Chronicles 10:2

And the Philistines followed hard after Saul, and after his sons; and the Philistines slew Jonathan, and Abinadab, and Malchi–shua, the sons of Saul.

Cross-reference

1 Chronicles 8:33 lists the same sons of Saul (Jonathan, Abinadab, Malchi-shua) who are slain here.

1 Chronicles 9:39 repeats the identical genealogy of Saul's sons, including those killed in battle.

1 Samuel 14:49 lists Saul's sons — Jonathan, Ishvi, Malchi-shua — while here three are killed including Abinadab instead of Ishvi.