Then Barnabas went to Tarsus to look for Saul, and when he had found him he brought him to Antioch. For a whole year they met with the Church and taught a large number of people,
and it was in Antioch that the disciples were first called Christians. (Acts 11:10-26)
https://bible.usccb.org/bible/readings/050223.cfm
It is Barnabas who goes searching for Saul to invite him to work with the fledgling community at Antioch. Of course, Saul will become Paul the great Apostle to the Gentiles. Saint Athanasius of Alexandria (298-373) struggled, sometimes alone, against the Arian heresy throughout his life. He was a great defender of the Incarnation. According to the Cotton Patch Gospels (which translated the Good News into Southern idiom), today’s passage says that it was in Mobile (my home town) that the disciples were first called Christians.