Omer fathers children in captivity, and two sons, Esrom and Coriantumr, rebel against Jared2’s rule. They have sufficient followers to launch an attack against Jared but probably had a smaller army, hence the night attack. Such attacks were rare and more dangerous than daylight maneuvers. (See commentary accompanying Alma 56:38–39.) The night attack evened their odds, enabling them to overcome Jared’s palace guard. Capturing the king would be equivalent to capturing the kingdom, as has been the Jaredite pattern (Ether 7:7, 17; 8:3).