Read 2 Samuel 17:9 Using Other Translations
Behold, he is hid now in some pit, or in some other place: and it will come to pass, when some of them be overthrown at the first, that whosoever heareth it will say, There is a slaughter among the people that follow Absalom.
Behold, even now he has hidden himself in one of the pits or in some other place. And as soon as some of the people fall at the first attack, whoever hears it will say, 'There has been a slaughter among the people who follow Absalom.'
He has probably already hidden in some pit or cave. And when he comes out and attacks and a few of your men fall, there will be panic among your troops, and the word will spread that Absalom’s men are being slaughtered.