2 Samuel 2:29 (BSB)

And all that night Abner and his men marched through the Arabah. They crossed the Jordan, marched all morning, and arrived at Mahanaim.

From 2 Samuel 2. Also in the ESV.

Commentary on 2 Samuel 2:29

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on 2 Samuel 2:25-32: Here, I. Abner, being conquered, meanly begs for a cessation of arms. He rallied the remains of his forces on the top of a hill (Sa2 2:25), as if he would have made head again, but becomes a humble supplicant to Joab for a little breathing-time, Sa2 2:26. He that was most forward to fight was the first that had enough of it.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on 2 Samuel 2:29: And Abner and his men walked all that night through the plain,.... The plain of Jordan. He marched with his men all night, lest Joab should return, and pursue him, and take vengeance on him for the death of his brother: and passed over Jordan; at one of the fords of it: and went through all Bithron; the name of a province or country, as...
• Adam Clarke (Methodist), Clarke's Commentary on the Bible on 2 Samuel 2:29: They came to Mahanaim - So they returned to the place whence they set out. See Sa2 2:12. This was the commencement of the civil wars between Israel and Judah, and properly the commencement of the division of the two kingdoms, through which both nations were deluged with blood.
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on 2 Samuel 2:29: 2Sa 2:29 Abner proceeded with his troops through the Arabah, i.e., the valley of the Jordan, marching the whole night; and then crossing the river, went through the whole of Bithron back to Mahanaim. Bithron is a district upon the eastern side of the Jordan, which is only mentioned here.