'Poor' in the Bible

for when you eat, each one hurries to get his own supper first [not waiting for others or the poor]. So one goes hungry while another gets drunk.

What! Do you not have houses in which to eat and drink? Or do you show contempt for the church of God and humiliate those [impoverished believers] who have nothing? What will I say to you? Shall I praise you for this? In this I will not praise you!

And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not charity, it profiteth me nothing.