Mark 9:13

Overview - Mark 9
Jesus is transfigured.
11 He instructs his disciples concerning the coming of Elias;
14 casts forth a deaf and dumb spirit;
30 foretells his death and resurrection;
33 exhorts his disciples to humility;
38 bidding them not to prohibit such as are not against them, nor to give offence to any of the faithful.
Treasury of Scripture Knowledge

Mark 9:13  (King James Version)
But I say unto you, That Elias is indeed come, and they have done unto him whatsoever they listed, as it is written of him.

Matthew 11:14 ; Matthew 17:12 Matthew 17:13 Luke 1:17

and they
6:14-28 Matthew 14:3-11 ; Luke 3:19 Luke 3:20 ; Acts 7:52