Acts 11:20

And some of them were men of Cyprus and Cyrene, which, when they were come to Antioch, spake unto the Grecians, preaching the Lord Jesus.

The men of Cyprus and Cyrene were disciples and believers who came to Antioch and there publicly preached the Lord Jesus Christ. They were part of those scattered from Jerusalem by the persecution that followed Stephen's death and martyrdom, having fled persecution and fled Jerusalem for Cyprus. From that scattering they carried the gospel beyond Jerusalem into nearby cities and into eastern cities and along major routes of travel as they sought people to bring to God.

In Antioch, a diverse and populous city, they extended the gospel beyond its earlier work among Hebrew and Greek-speaking Jews to Greeks. Those who held the different reading taught that they preached to Greek-speaking Jews, with the work of the dispersed disciples still limited to Hebrew- and Greek-speaking Jews. The Lord was with them and blessed their preaching, so many hearers believed and turned to the Lord.

As the work at Antioch grew, Barnabas came to help, and he and Paul taught there together and strengthened it. The verse shows God's providence in spreading the early church and teaches the need to carry out missionary work in many places rather than limiting it to a few localities.