The Jewish priestly class had been some of the fiercest skeptics and adversaries of the Lord Jesus in his earthly ministry. They were also fierce opponents of the apostles in their ministry, often threatening and persecuting them, and they even approved Saul's going to Damascus to arrest Christians (Acts 9:1-2). The Holy Spirit used the problem in taking care of needy Greek-speaking widows in Jerusalem to open the hearts of many of those priests to follow Jesus. A potentially divisive controversy became an evangelistic opportunity. I am not sure what captured the hearts of the priests, but the way the apostles handled this problem became the Holy Spirit's tool of influence. The message of Jesus IS unstoppable! The Spirit used the solving of a potential conflict to spread the Good News to a group that seemed unreachable in those days. Imagine what Spirit can do as we lovingly and spiritually address our problems today!