To this agree (toutōi sumphōnousin). Associative instrumental case (toutōi) after sumphōnousin (voice together with, symphony with, harmonize with), from sumphōneō, old verb seen already in Mat 18:19; Luk 5:36; Act 5:9 which see. James cites only Amo 9:11, Amo 9:12 from the lxx as an example of “the words of the prophets” (hoi logoi tōn prophētōn) to which he refers on this point. The somewhat free quotation runs here through Act 15:16-18 of Acts 15 and is exceedingly pertinent. The Jewish rabbis often failed to understand the prophets as Jesus showed. The passage in Amos refers primarily to the restoration of the Davidic empire, but also the Messiah’s Kingdom (the throne of David his father,” Luk 1:32).