Acts 18:5 When Silas and Timothy had come from Macedonia, Paul was compelled [a]by the Spirit, and testified to the Jews that Jesus is the Christ. 6 But when they opposed him and blasphemed, he shook his garments and said to them, “Your blood be upon your own heads; I am clean. From now on I will go to the Gentiles.” 7 And he departed from there and entered the house of a certain man named [b]Justus, one who worshiped God, whose house was next door to the synagogue. 8 Then Crispus, the ruler of the synagogue, believed on the Lord with all his household. And many of the Corinthians, hearing, believed and were baptized.

So Paul had the hardest time ministering to the Jews, the Lords chosen people. So he left the synagogue and went across the street to Justus’ house.

Paul devoted his life to talking about Christ and Christ crucified. Some listened and some did not.

Luke 12:49 “I have come to set the world on fire, and I wish it were already burning! 50 I have a terrible baptism of suffering ahead of me, and I am under a heavy burden until it is accomplished. 51 Do you think I have come to bring peace to the earth? No, I have come to divide people against each other! 52 From now on families will be split apart, three in favor of me, and two against—or two in favor and three against.

The preaching of the Gospel will divide people. Those who believe will create anger from those who choose not to believe. I think Paul was very aware of this. When the Jews opposed him and mocked him, it became clear where they stood.
Do not let this discourage you.