John Calvin on Acts 14:13

13. Also Jupiter’s priest. Though Luke doth not express with what affection he [this priest] was moved to be so diligent, yet it is to be thought, that, forasmuch as there was great hope of most plentiful gain offered, he was moved with covetousness. For he had great hope of gain in time to come, if it should be noised abroad that Jupiter appeared there. For this opinion would by and by have followed, that Jupiter was more delighted in the temple of Lystra than in any other. And so soon as such superstition hath once filled the minds of men, they spare no cost to offer sacrifice. “Donaria,” gifts. The world is indeed of itself inclined to this, but then came the sacrificing priests, who are like fans and bellows. And it is not to be doubted, but that the whole multitude was moved with ambition, to be so desirous to offer sacrifice to Paul under the name of Jupiter, that their city might be the more famous and noble. Hence hath Satan so great liberty [license] to deceive, whilst that the sacrificing priests set nets to get gain, and the people are delighted to have errors confirmed.

Acts 14:14-18

14. Furthermore, when the apostles, Barnabas and Saul, had heard, rending their garments, they ran in into the, press, crying, 15. And saying, Men, why do ye these things? We be also men subject to like miseries as you are, preaching to you that you turn from those vain things unto the living God, who hath made heaven and earth, and the sea, and whatsoever are in them: 16. Who in times, past suffered all nations to walk in their own ways, 17. Though he left not himself without witness, doing good, giving to us from heaven rain and fruitful times, replenishing with food and gladness our hearts. 18. And when they had thus said, they scarce appeased the multitude, that they should do [from doing] sacrifice to them.