Theophylact of Ohrid

But they used to walk in honourable garments, because they wished to be highly esteemed for it, and in like manner they desired other things, which lead to glory. For it goes on: And love salutations in the marketplaces, and the chief seats in the synagogues, and the uppermost rooms at feasts. He also especially teaches the Apostles, not to have any communication with the scribes, but to imitate Christ Himself; and in ordaining them to be masters in the duties of life, He places others under them. …

Catena Aurea by Aquinas ↗

Hegemonius

The Pharisees looked to the "tithing of anise and cummin, and left undone the weightier matters of the law." While devoting great care to the things which were external, they overlooked those which bore upon salvation of the soul. For they also paid much attention to "greetings in the marketplace," and to the "uppermost seats at feasts." To them the Lord Jesus, knowing their perdition, made this declaration: that they attended to those things only which were external, and despised as strange those things which were within, and did …

The Disputation With Manes 21 ↗

Bede

We must observe that He does not forbid that those, to whom it falls by the rule of their office, should be saluted in the marketplace, or have chief seats and places at feasts, but He teaches that those who love those things unduly, whether they have them or no, are to be avoided by the faithful as wicked men: that is, He blames the intention and not the office; although this too is culpable, that the very men who wish to be called masters of the synagogue in Moses' seat, should have to do with lawsuits in the …

Catena Aurea by Aquinas ↗