2 Samuel 2:8, 12, 29

Now [Saul’s cousin] Abner the son of Ner, commander of Saul’s army, had taken Ish-bosheth the son of Saul and brought him over to Mahanaim.

Now Abner the son of Ner and the servants of Ish-bosheth the son of Saul went out from Mahanaim to Gibeon.

Then Abner and his men went through the Arabah (desert region) all that night, crossed the Jordan, went through Bithron and walked the whole morning and came to Mahanaim [where Ish-bosheth ruled Israel].