Matthew Poole and continuators on 2 Samuel 2:10

10 Ishbosheth Sauls son was fourty years old when he began to reign over Israel, and reigned two years : but the house of Judah followed David.

To wit, before the following War broke forth. Compare 1 Sam. 13. 1. For that he Reigned longer, may appear both from the following Verse, and from ch. 3. 1. and from the following History. Though some think he Reigned onely two Years, and that the rest of David's seven Years the Israelites by Abner's instigation stuck to the House of Saul, but were in suspence whether they should confer the Crown upon Mephibosheth the right Heir, but a Child; or upon Ishbosheth a grown man, whom with some difficulty, and after long debates amongst themselves, they preferred.