New Revised Standard Version
And the disciples asked him, “Why, then, do the scribes say that Elijah must come first?”

Contemporary English Version
The disciples asked Jesus, "Don't the teachers of the Law of Moses say Elijah must come before the Messiah does?"

New American Bible
Then the disciples asked him, “Why do the scribes say that Elijah must come first?”

Douay-Rheims Bible
And his disciples asked him, saying: Why then do the scribes say that Elias must come first?

And his disciples asked him, saying: Why then do the scribes say that Elias must come first?

Why.

Matthew 17:3,4 And behold there appeared to them Moses and Elias talking with him. . . .

Matthew 11:14 And if you will receive it, he is Elias that is to come.

Matthew 27:47-49 And some that stood there and heard said: This man calleth Elias. . . .

Malachi 4:5,6 Behold, I will send you Elias the prophet, before the coming of the great and dreadful day of the Lord. . . .

Mark 9:11 And they asked him, saying: Why then do the Pharisees and scribes say that Elias must come first?

John 1:21,25 And they asked him: What then? Art thou Elias? And he said: I am not. Art thou the prophet? And he answered: No. . . .