Paul and Barnabas have a similar experience in Iconium as they had in Antioch: there is a strong response to the gospel followed by dissension from the disbelieving Jews.  Despite the hostility, the missionaries are able to stay in Iconium for a long time and perform miracles as well as disciple the new believers there.  Also, a closer look at the reasons behind the Jews hostility demonstrate the challenge that the Gospel presented to them.

[Act 14:1-7 NASB] 1 In Iconium they entered the synagogue of the Jews together, and spoke in such a manner that a large number of people believed, both of Jews and of Greeks. 2 But the Jews who disbelieved stirred up the minds of the Gentiles and embittered them against the brethren. 3 Therefore they spent a long time [there] speaking boldly [with reliance] upon the Lord, who was testifying to the word of His grace, granting that signs and wonders be done by their hands. 4 But the people of the city were divided; and some sided with the Jews, and some with the apostles. 5 And when an attempt was made by both the Gentiles and the Jews with their rulers, to mistreat and to stone them, 6 they became aware of it and fled to the cities of Lycaonia, Lystra and Derbe, and the surrounding region; 7 and there they continued to preach the gospel.