Adam Clarke on 2 Corinthians 8:2

In a great trial of affliction - The sense of this verse is the following: The Macedonians, though both poor and persecuted, rejoiced exceedingly that an opportunity was afforded them of doing good to their more impoverished and more persecuted brethren. We can scarcely ever speak of poverty and affliction in an absolute sense; they are only comparative. Even the poor are called to relieve those who are poorer than themselves; and the afflicted, to comfort those who are more afflicted than they are. The poor and afflicted Churches of Macedonia felt this duty, and therefore came forward to the uttermost of their power to relieve their more impoverished and afflicted brethren in Judea.