And his disciples asked him, saying, Why then say the scribes that Elias must first come? His disciples - instead of His disciples, some MSS., with the Coptic, Armenian, Vulgate, all the Itala except two, and Origen, read simply, οι μαθηται, The disciples, i.e. those only who had been with him on the mount, Peter, James, and John.
Why then say the scribes that Elias must first come? - As the disciples saw that Elijah returned to heaven, knowing the tradition of the elders, and the prophecy on which the tradition was founded, Malachi 4:5, Malachi 4:6, Behold I send you Elijah the prophet, before the great and terrible day of the Lord shall come; and he shall turn the hearts, etc., it was natural enough for them to inquire what the meaning of the tradition, and the intention of the prophecy, were.