McGarvey and Pendleton Commentaries
Acts 14 - Introduction
XIV: 1, 2. In Iconium the two missionaries met with better success than in Antioch, but they encountered similar opposition, and from the same source. (1) " Now it came to pass in Iconium, that they went together into the synagogue of the Jews, and so spoke that a great multitude, both of the Jews and the Greeks, believed. (2) But the unbelieving Jews stirred up and disaffected the minds of the Gentiles against the brethren. " The multitude of Jews and Gentiles who believed must have been "great," not in comparison to the whole population, but to the number who were usually convinced under such circumstances, and especially to the number who had just been convinced in Antioch. For we see that the unbelieving Jews were still an influential body, and the remark that they "disaffected the minds of the Gentiles" indicates that the masses of the Gentiles were still unbelievers.
It should not escape the notice of the reader, that the conviction of these people is attributed distinctly to the force of what the apostles spoke. They " so spoke that a great multitude believed." This is one among many incidental remarks of Luke, which indicate that he had no conception of the modern doctrine that faith is produced by an abstract operation of the Holy Spirit, and which confirm by historic facts the doctrine of Paul, that faith comes by hearing the word of God.