Peter; Paul & Barnabas; James—Each weigh in on the historic Joy of Gentile Conversion. It is no less than God keeping His promises to bring salvation to the ends of the earth...because the House of David had been restored!
Peter—God spoke through me to bring the Gentiles to the faith.
Paul & Barnabas—God worked signs and wonders through us as we brought the Gentiles to the faith.
James—God kept a promise made long ago to restore David to his former glory and bring the Gentiles to the faith; taking from them a people for Himself.
The letter they then wrote and distributed among the Gentile churches brought clarity and great comfort. The family of Jesus continued to grow.