In these verses, the word "he" refers to Barnabas. The word "they" refers to the believers of the church at Jerusalem. The words "them" and "their" refer to the new believers ([Acts 11:20](../11/20.md)).
Here "ears" refers to the believers' hearing about the event. Alternate translation: "the believers in the church" (See: [[rc://en/ta/man/translate/figs-metonymy]])