2 Corinthians: Encouragement to Completion

In 2 Corinthians 8, Paul encourages the Corinthians to complete in the fellowship of ministering to the saints in Jerusalem. What does this look like? What are the motivations? Does Paul lay a burden upon the Corinthians as they continue to turn their ship around? What does our Lord Jesus say about this? What a great treasure of application we have in this text concerning this fellowship!