Berean Standard Bible (BSB)
Then the disciples understood that He was speaking to them about John the Baptist.
World English Bible (WEB)
Then the disciples understood that he spoke to them of John the Baptizer.
Strong's King James
Then{G5119} the disciples{G3101} understood{G4920}{(G5656)} that{G3754} he spake{G2036}{(G5627)} unto them{G846} of{G4012} John{G2491} the Baptist{G910}.
The F.O.G *
(13) At that time, the disciples understood that He spoke to them about John the Immerser.
The F.O.G Message *
Young's Literal Translation
Then understood the disciples that concerning John the Baptist he spake to them.