John Mark
Mark 9:13BSB·traditional attribution

But I tell you that Elijah has indeed come, and they have done to him whatever they wished, just as it is written about him.”

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A prediction of Christ's kingdom now near approaching, Mar 9:1. That which is foretold, is, 1. That the kingdom of God would come, and would come so as to be seen: the kingdom of the Messiah shall be set up in the world by the utter destruction of the Jewish polity, which stood in the way of it; this was the restoring...

Commenting on Mark 9:1-13

John Gill Reformed Baptist @doctorgill

But I say unto you, that Elias is indeed come,.... Meaning John the Baptist, who in prophecy is designed by him. And they have done unto him whatsoever they listed; See Gill on Mat 17:12; which words should be read in a parenthesis, as they are in the Vulgate Latin version; for what follows, as it is written of him, respects not what the Scribes...