2 Samuel 4:5 (BSB)

Now Rechab and Baanah, the sons of Rimmon the Beerothite, set out and arrived at the house of Ish-bosheth in the heat of the day, while the king was taking his midday nap.

From 2 Samuel 4. Also in the ESV.

Commentary on 2 Samuel 4:5

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on 2 Samuel 4:1-8: Here is, I. The weakness of Saul's house. Still it grew weaker and weaker. 1. As for Ishbosheth, who was in possession of the throne, his hands were feeble, Sa2 4:1. All the strength they ever had was from Abner's support, and now that he was dead he had no spirit left in him.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on 2 Samuel 4:5: And they came thither into the midst of the house,.... They not only came unto it, but entered into it, and went into the inmost part of it; the guards being asleep also perhaps, or not on duty, so that there were none to obstruct them; or if there were, they deceived them, since they went in as though they would have fetched wheat; out...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on 2 Samuel 4:5: Rechab and Baanah went and came about the heat of the day to the house of Ish-bosheth, &c.--It is still a custom in the East to allow their soldiers a certain quantity of corn, together with some pay; and these two captains very naturally went to the palace the day before to fetch wheat, in order to distribute it to the soldiers, that it might...
• Adam Clarke (Methodist), Clarke's Commentary on the Bible on 2 Samuel 4:5: Lay on a bed at noon - It is a custom in all hot countries to travel or work very early and very late, and rest at noonday, in which the heat chiefly prevails.