18:8), Erastus, and Gaius (Caius) were, however, men of rank (Ro 16:23). A variety of classes is also implied in 1Co 11:22. The risk of contamination by contact with the surrounding corruptions, and the temptation to a craving for Greek philosophy and rhetoric (which Apollos' eloquent style rather tended to foster, Ac 18:24, &c.) in contrast to Paul's simple preaching of Christ crucified (1Co 2:1, &c.), as well as the opposition of certain teachers to him, naturally caused him anxiety. Emissaries from the Judaizers of Palestine boasted of "letters of commendation" from Jerusalem, the metropolis of the faith. They did not, it is true, insist on circumcision in refined Corinth, where the attempt would have been hopeless, as they did among the simpler people of Galatia; but they attacked the apostolic authority of Paul (1Co 9:1, 2; 2Co 10:1, 7, 8), some of them declaring themselves followers of Cephas, the chief apostle, others boasting that they belonged to Christ Himself (1Co 1:12; 2Co 10:7), while they haughtily repudiated all subordinate teaching. Those persons gave out themselves for apostles (2Co 11:5, 13). The ground taken by them was that Paul was not one of the Twelve, and not an eye-witness of the Gospel facts, and durst not prove his apostleship by claiming sustenance from the Christian Church. Another section avowed themselves followers of Paul himself, but did so in a party spirit, exalting the minister rather than Christ. The followers of Apollos, again, unduly prized his Alexandrian learning and eloquence, to