Charles Ellicott Commentary 2 Samuel 17:3

"and I will bring back all the people unto thee: the man whom thou seekest is as if all returned: [so] all the people shall be in peace." — 2 Samuel 17:3 (ASV)

Bring back all the people. —This evil counsellor, with artful flattery, assumes that Absalom is the rightful king, and that the people who have gone off after David only need to be brought back to their allegiance.