When the crowds saw what Paul had done, they shouted in the Lycaonian language, “The gods have come down to us in human form!” Barnabas they called Zeus, and Paul they called Hermes, because he was the chief speaker. The priest of Zeus, whose temple was just outside the city, brought oxen and garlands to the gates; he and the crowds wanted to offer sacrifice.
When the apostles Barnabas and Paul heard of it, they tore their clothes and rushed out into the crowd, shouting, “Friends, why are you doing this? We are mortals just like you, and we bring you good news, that you should turn from these worthless things to the living God, who made the heaven and the earth and the sea and all that is in them. In past generations he allowed all the nations to follow their own ways; yet he has not left himself without a witness in doing good—giving you rains from heaven and fruitful seasons, and filling you with food and your hearts with joy.”
Even with these words, they scarcely restrained the crowds from offering sacrifice to them.
This is in contrast to Paul’s later methods at Mars Hill in Chapter 17. Here we see that not every “contextualization” is created equal. Sometimes, your “relevance” could be dragging people to worship yourself or false idols. As preachers, we should always be on the lookout for this, and to constantly speak against it.
On another note, that bold part (v.15) should be the model for every single sermon.