John Mark
Mark 9:10BSB·traditional attribution

So they kept this matter to themselves, discussing what it meant to rise from the dead.

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

And they kept that saying with themselves,.... "They retained it in their own mind", as the Persic version renders it; "they kept it close", as Luke says, Luk 9:36, among themselves, and acquainted no man with it: and which refers either to the whole of Christ's charge, relating to the vision on the mount; or else only to what he said about his resurrection from...

Geneva Bible Notes Reformed @genevanotes

And they kept that saying with themselves, questioning one with another what the rising from the dead should mean. (d) Though just barely as it were. (e) They did not question together concerning the general resurrection, which will be in the latter day, but they did not understand what he meant when he spoke of his own special resurrection.