The reading is from St. Paul's Second Letter to the Corinthians 9:6-11

Brethren, he who sows sparingly will also reap sparingly, and he who sows bountifully will also reap bountifully. Each one must do as he has made up his mind, not reluctantly or under compulsion, for God loves a cheerful giver. And God is able to provide you with every blessing in abundance, so that you may always have enough of everything and may provide in abundance for every good work. As it is written, "He scatters abroad, he gives to the poor; his righteousness endures for ever." He who supplies seed to the sower and bread for food will supply and multiply your resources and increase the harvest of your righteousness. You will be enriched in every way for great generosity, which through us will produce thanksgiving to God.