While Paul was in Corinth:
“he reasoned in the synagogue every sabbath, and persuaded the Jews and the Greeks. And when Silas and Timotheus were come from Macedonia, Paul was pressed in the spirit, and testified to the Jews that Jesus was Christ. And when they opposed themselves, and blasphemed, he shook his raiment, and said unto them, Your blood be upon your own heads; I am clean: from henceforth I will go unto the Gentiles” (Acts 18:4-6).
One of the truly remarkable things about Paul is his determination to tell everybody what he knows to be true. He reasoned and persuaded until all hope was gone, shook his raiment, and went where the fields were greener (whiter?). This is the message of D&C 4:2 and Jacob 1:18, 19. We must declare the word "with all diligence," and with all our "heart, might, mind, and strength."