Salmos 81
Theodoret of Cyrus · Comentário Patrístico (catena)
Salmos 81:3-4
"Blow the trumpet at the new moon, on our festival day of good omen. Because it is a command for Israel, a judgment of the God of Jacob." God ordered the priests to use the trumpets. They reminded the people of the trumpets used on the mountain: when the God of all spoke on Mount Sinai, [Scripture] says, there was a loud noise of the trumpet. So when the priests used the trumpets, they reminded the people of that appearance. Consequently, they were right to command those who had been granted return and had enjoyed the divine assistance to make use of the trumpets along with the other instruments. — COMMENTARY ON THE PSALMS 81:3
Salmos 81:13-14
"If my people listened to me, if Israel traveled in my ways, I would have reduced their foes to nothing and laid my hand on those afflicting them." If they had adhered to my advice and followed my commandments, I would easily have destroyed their foes. "To nothing" suggests the facility—in other words, easily and without trouble I would have been able to bring about their ruin in an instant. — COMMENTARY ON THE PSALMS 81:8
Salmos 81:15
"The Lord's foes were false to him." Aquila … put it this way: "in their hatred they will deny the Lord." By denying Christ the Lord, they brought hatred on themselves, and by being false to him and to the existing covenants they made themselves enemies of the Lord. After the giving of the law, [Scripture] says that the people replied, "All that the Lord God has said we will do and listen to." While their promises were of this kind, their words were the direct opposite—they crucified their own Lord when he appeared and received a penalty for their impiety, namely, eternal ruin. This was true not only of them but also of Arius, Eunomius, Nestorius and the devotees of their teachings. — COMMENTARY ON THE PSALMS 81:8