Commentators note that after Peter's theological defense, the assembly fell silent to hear the testimony of Paul and Barnabas. Their report of 'signs and wonders' among the Gentiles was not just a story, but evidence. Scholars explain this was God's 'seal of approval' on the Gentile mission, demonstrating His will more powerfully than any human debate could. This shows that sharing what God has done can be the most compelling argument for the truth of the gospel.