2 Samuel 2:8, 12, 29

But Abner son of Ner, the commander of Saul’s army, had already gone to Mahanaim with Saul’s son Ishbosheth.

One day Abner led Ishbosheth’s troops from Mahanaim to Gibeon.

All that night Abner and his men retreated through the Jordan Valley. They crossed the Jordan River, traveling all through the morning, and didn’t stop until they arrived at Mahanaim.