The saints, with their hope in the world to come, have more than those who appear to be rich in this world. But both will be made equal, because those who give of their wealth to help the saints now will be helped by them at some future time, when they are in need.
Now this happened in the case of the manna. For both they that gathered more, and they that gathered less, were found to have the same quantity, God in this way punishing insatiableness. And this he said at once both to alarm them by what then happened, and to persuade them never to desire to have more nor to grieve at having less. And this one may see happening now in things of this life not in the manna only. For if we all fill but one belly, and live the same length of time, and clothe one body; neither will the rich gain aught by his abundance nor the poor lose aught by his poverty.
[AD 384] Ambrosiaster on 2 Corinthians 8:15