According to Paul, he is telling his friends in Corinth that when he visits, they can choose someone they trust to safely take their kind gifts to the people in Jerusalem. Paul is making sure their gifts will help those in need.
1 Corinthians 16:3: And when I come, whomsoever ye shall approve by [your] letters, them will I send to bring your liberality unto Jerusalem. [liberality: Gr. gift]
This verse emphasizes the necessity of works in addition to faith, which could contradict the financial collection system in 1 Corinthians 16:3 for church support that focuses on monetary contributions instead of personal acts of service.
James 2:17: Even so faith, if it hath not works, is dead, being alone. [alone: Gr. by itself]