Do what Paul did?
Act 13:14 But when they departed from Perga, they came to Antioch in Pisidia, and went into the synagogue on the sabbath day, and sat down.
Act 13:42 And when the Jews were gone out of the synagogue, the Gentiles besought that these words might be preached to them the next sabbath.
Act 13:43 Now when the congregation was broken up, many of the Jews and religious proselytes followed Paul and Barnabas: who, speaking to them, persuaded them to continue in the grace of God.
Act 13:44 And the next sabbath day came almost the whole city together to hear the word of God.
Act 16:12 And from thence to Philippi, which is the chief city of that part of Macedonia, and a colony: and we were in that city abiding certain days.
Act 16:13 And on the sabbath we went out of the city by a river side, where prayer was wont to be made; and we sat down, and spake unto the women which resorted thither.
Act 17:1 Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where was a synagogue of the Jews:
Act 17:2 And Paul, as his manner was, went in unto them, and three sabbath days reasoned with them out of the scriptures,
Act 18:1 After these things Paul departed from Athens, and came to Corinth;
Act 18:2 And found a certain Jew named Aquila, born in Pontus, lately come from Italy, with his wife Priscilla; (because that Claudius had commanded all Jews to depart from Rome
and came unto them.
Act 18:3 And because he was of the same craft, he abode with them, and wrought: for by their occupation they were tentmakers.
Act 18:4 And he reasoned in the synagogue every sabbath, and persuaded the Jews and the Greeks.
In each case Paul was preaching to Gentiles in Gentile cities on the Sabbath.