Matthew
Matthew 23:2ESV·traditional attribution

“The scribes and the Pharisees sit on Moses’ seat,

John Calvin Reformed @genevareformer

2. In the chair of Moses. Reasons were not wanting for inserting here what Luke relates at a different place. Besides that the doctrine is the same, I have no doubt that Luke, after having said that the scribes were sharply and severely reproved by our Lord, added also the other reproofs which Matthew delayed till the proper place; for already we have frequently seen...

John Gill Reformed Baptist @doctorgill

Saying, the Scribes and Pharisees,.... The Persic version adds, the priests: but Christ does not here speak of the sanhedrim, or grand council of the nation, and of their legislative power; but of those that were the teachers of the people, and the interpreters of the law; and of those, who, though they corrupted the word with their glosses and traditions, yet retained some truth...

Albert Barnes Presbyterian @notesbybarnes

Verse 2. Scribes and Pharisees. . Moses' seat, Moses was a legislator of the Jews. By him the law was given; and the office of explaining that law devolved on the scribes and Pharisees. In the synagogues they sat while expounding the law, and rose when they read it. By sitting in the seat of Moses we are to understand authority to teach the law.