2 Samuel 3:37

For all the people and all Israel understood that day
Not the people of Judah only, but of Israel also, to whom the knowledge of these things came; they knew and were satisfied by his conduct and behaviour, by his words and actions:

that it was not of the king to slay Abner the son of Ner;
it was not by the counsel or advice of the king, as the Targum; it was without his knowledge and consent, was contrary to his mind and will; that he had no manner of concern in it, and that if it had been in his power he would have prevented it.