2 Samuel 4:6 (BSB)

They entered the interior of the house as if to get some wheat, and they stabbed him in the stomach. Then Rechab and his brother Baanah slipped away.

From 2 Samuel 4. Also in the ESV.

Commentary on 2 Samuel 4:6

• 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 4:6: For when they came into the house, he lay on his bed in his bedchamber,.... This is repeated to give a more particular account of the murder; though Abarbinel thinks they went in twice; when they went in first they smote him under the fifth rib, and made their escape; but fearing they had not left him dead, they returned, and did as follows: and...
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on 2 Samuel 4:6: And they came thither into the midst of the house, [as though] they would have fetched wheat; and they smote him under the fifth [rib]: and Rechab and Baanah his brother escaped. (e) They disguised themselves as merchants, who came to buy wheat. (f) There is nothing so vile and dangerous, which the wicked will not undertake in hope of money and favour.
• Adam Clarke (Methodist), Clarke's Commentary on the Bible on 2 Samuel 4:6: As though they would have fetched wheat - The king's stores were probably near his own dwelling; and these men were accustomed to go thither for provisions for themselves, their cattle, and their men. This supposition which is natural, renders unnecessary all the emendations of Houbigant and others.