27 Joab answered, “As surely as God lives, if you had not spoken, the men would have continued pursuing them until morning.”

Read 2 Samuel 2:27 Using Other Translations

And Joab said, As God liveth, unless thou hadst spoken, surely then in the morning the people had gone up every one from following his brother.
And Joab said, "As God lives, if you had not spoken, surely the men would not have given up the pursuit of their brothers until the morning."
Then Joab said, “God only knows what would have happened if you hadn’t spoken, for we would have chased you all night if necessary.”