2 Corinthians 8:11 Now therefore perform the doing of it; that as there was a readiness to will, so there may be a performance also out of that which ye have.

The Corinthian church was first to express the willingness to contribute to the support of the saints’ needs in Jerusalem. However, it’s been a year since and the work was not completed. Other churches are done with their contribution.

The Apostle Paul is nudging them on to the completion of it. He is urging them to not hesitate but be forthcoming in this good work. And this contribution should be according to the resources they have with them and not pledging their future income, which is not certain.