What does 2 Corinthians 8:13 mean?
When Christianity was established in Jerusalem after Pentecost, it became renowned in the wider community for sharing all things in common. Every believer in a congregation was provided for because every Christian gave what they had to meet the needs of others (Acts 2:44–45). This practice is not commanded specifically for churches, but Paul describes a version of it in this verse.He makes clear to the Christians in Corinth that he does not expect them to give so much to the Christians in Jerusalem that they become destitute. Nor is he seeking for them to suffer while the Jerusalem believers experience a life of ease. He is not asking the Corinthians to give everything they have or more than they have.
Paul does believe, though, that there should be fairness among the Christian community. It doesn't make sense to him that some believers should live on the verge of starvation while others lived to excess. He offers more detail in the following verses.