C. F. Keil and Franz Delitzsch on 1 Chronicles 8:33

1Ch 8:33

The family of Ner. Ner begat Kish, and Kish Saul. According to 1Sa 9:1 and 1Sa 14:51, Kish was a son of Abiel. this statement, on account of which Bertheau proposes to make alterations in the text, may be reconciled with that in our verses, by the simple supposition that in our verse intermediate names mentioned in 1Sa 9:1, and probably others besides, are passed over, and Ner the son of Abi-Gibeon is named only because he was the progenitor of the line by which Saul was descended from him. Saul (שׁאוּל) is King Saul. Only three of his four sons, 1Sa 14:49, are mentioned-those, namely, who fell with him in the battle against the Philistines, 1Sa 31:2. The second is called, in 1Sa 14:49, Ishui, but in 1Sa 31:2 Abinadab, as in our register, whence we gather that Ishui is another name for Abinadab. The fourth, Eshbaal, is the same who is called in 2Sa 2:8, and elsewhere, Ishbosheth, who was set up as king in opposition to David by Abner (see on 2Sa 2:8).