Paul is referring to the collection of money from the Corinthians for the believers in Jerusalem. AT: "who had encouraged your giving in the first place" (See: [[rc://en/ta/man/translate/figs-explicit]])
Titus was to help the Corinthians to complete the collection of money. AT: "to encourage you to finish collecting and giving your generous gift" (See: [[rc://en/ta/man/translate/figs-explicit]])
Paul speaks of the Corinthian believers as if they were producing physical goods. AT: "You do well in so many ways" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Paul speaks of the Corinthian believers as if they should produce physical goods. AT: "make sure you do well in giving for the believers in Jerusalem" (See: [[rc://en/ta/man/translate/figs-metaphor]])