Making Known the Grace of God
Paul doesn't jump right in, telling the Corinthians what they have done wrong, but starts by pointing then to the Macedonians. God's grace to the Macedonians is seen in the very fact that there are churches in Macedonia. His grace is also seen IN the Macedonians as they endured a heavy test but remained generous and zealous. Finally, God's grace is seen THROUGH them as He added His blessing to the little they gave.