For there are set thrones of judgment, the thrones of the house of David.
Read Chapter 122
Augustine of Hippo
9. "For there were seated seats for judgment" (ver. 5). This is a wonderful riddle, a wonderful question, if it be not understood. He calleth those seats, which the Greeks call thrones. The Greeks call chairs thrones, as a term of honour. Therefore, my brethren, it is not wonderful if even we should sit on seats, or chairs; but that these seats themselves should sit, when shall we be able to understand this? As if some one should say: let stools or chairs sit here. We sit on chairs, we sit on seats, we sit on stools; the seats themselves sit not. What then meaneth this, "For there were seated seats for judgment"? ...If therefore heaven be the seat of God, and the Apostles are heaven; they themselves are become the seat of God, the throne of God. It is said in another passage: "The soul of the righteous is the throne of wisdom." A great truth, a great truth, is declared; the throne of wisdom is the soul of the righteous; that is, wisdom sitteth in the soul of the righteous as it were in...
Upon. Or "over. "(Haydock)
The Jews made their sanhedrim superior to the kings, as the Chaldean here insinuates. But the text rather means that both the ecclesiastical and civil courts shall be re-established, and bring an immense concourse of people to the city. (Calmet)
The Church is empowered to pass sentence, (Worthington) and the apostles shall judge both men and angels. (Haydock)