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.
2 Samuel 3:26 Cross References - KJV_Cambridge
Proverbs 26:23-26
23 Burning lips and a wicked heart are like a potsherd covered with silver dross.
24 He that hateth dissembleth with his lips, and layeth up deceit within him;
25 When he speaketh fair, believe him not: for there are seven abominations in his heart.
26 Whose hatred is covered by deceit, his wickedness shall be shewed before the whole congregation.