Theophylact of Ohrid

Christ however cures them; first indeed by drawing them to Himself in order to comfort them; and this is meant, when it is said, But Jesus called them to him; then by showing them that to usurp honour, and to desire the chief place, belongs to Gentiles. Wherefore there follows: And saith unto them, Ye know that they which are accounted to rule over the Gentiles exercise lordship; and their great ones exercise authority over them. The great ones of the Gentiles thrust themselves into the chief place tyrannically and as lords. …

Catena Aurea by Aquinas ↗

Bede

But Jesus, calling them, said to them: You know that those who are considered to rule over the Gentiles lord it over them, and their great ones exercise authority over them. But it is not so among you, etc. Humble and meek teacher, he neither reproaches the two asking with excessive greed, nor does he rebuke the remaining ten with indignation and envy, but he sets such an example, by which he teaches that he is greater who is lesser, and that he becomes the master who is the servant of all. …

On the Gospel of Mark ↗