Catena Aurea on Matthew 22:34–40: Pseudo-Chrysostom

Or the Pharisees meet together, that their numbers may silence Him whom their reasonings could not confute; thus, while they array numbers against Him, shewing that truth failed them; they said among themselves, Let one speak for all, and all speak, through one, so if He prevail, the victory may seem to belong to all; if He be overthrown, the defeat may rest with Him alone; so it follows, “Then one of them, a teacher of the Law, asked him a question, tempting Him.”