A title for this passage from second Corinthians might be. "Don't be cheap; here's why"

Paul is suggesting to the Corinthians that a key part of Christian theology is charity and relief. As mentioned previously in Acts 11.

Paul also takes the occasion of this letter to recommend Titus and friends.

Paul holds up the Macedonians as a good example for their charitable giving.

Paul asks not only for enthusiasm for generosity, but also for completion and accomplishment of charitable giving.

Paul emphasizes how our generosity can be parallel to the selflessness of Jesus Christ in his sacrifice four our sins.

Paul mentions that there may be questions about how he has managed the money, but suggests that the Corinthians would see that Paul was honest.

The point to take away from this lesson is that in Bible days, the church had to request for financial help from others, it was done with a theological basis, and done and gladness. It some things have not changed since that time.