2 Samuel 3:26 in the World English Bible
When Joab had come out from David, he sent messengers after Abner, and they brought him back from the well of Sirah; but David didn’t know it.
Context
25 Thou knowest Abner the son of Ner, that he came to deceive thee, and to know thy going out and thy coming in, and to know all that thou doest.
26 And when Joab was come out from David, he sent messengers after Abner, which brought him again from the well of Sirah: but David knew it not.
27 And when Abner was returned to Hebron, Joab took him aside in the gate to speak with him quietly, and smote him there under the fifth rib, that he died, for the blood of Asahel his brother.