And now, brothers, we want you to know about the grace that God has given the Macedonian churches. Out of the most severe trial, their overflowing joy and their extreme poverty welled up in rich generosity. Love is a byproduct of God's grace. God's grace inspired generosity that gave the Macedonians great joy. Their abundant joy overflowed in generosity.
Grace comes down, joy comes up and generosity overflows.
So love is the overflow of joy in God. This shows the highest service I can give involves generosity that gives me overflowing joy and directs the glory to God. The Macedonians were not giving under pressure. This was a massive outpouring of love in spite of their extreme poverty. Their generosity did not deliver them from their extreme poverty.