A.T. Robertson Commentary Mark 9:14

"And when they came to the disciples, they saw a great multitude about them, and scribes questioning with them." — Mark 9:14 (ASV)

And scribes questioning with them (κα γραμματεις συνζητουντες προς αυτους). Mark alone gives this item. He is much fuller on this incident (9:14-29) than either Matthew (Matthew 17:14–20) or Luke (Luke 9:37–43). It was just like the professional scribes to take keen interest in the failure of the nine disciples to cure this poor boy. They gleefully nagged and quizzed them. Jesus and the three find them at it when they arrive in the plain.