The Gentile churches were contributing money for those poor in Jerusalem. Paul instructed Corinthians to set something aside for a weekly collection, which will be borne to Jerusalem.
Paul shared his plans to visit Corinth and gives news and instructions to various individuals. Paul commends Timothy, who is coming to visit the Corinthians - he asks them to treat him well. Apollos will come later when he has an opportunity.
Paul issued a word of caution:
1 Corinthians 16:13-14 Be on your guard; stand firm in the faith; be courageous; be strong. Do everything in love.Paul is sending greetings from Aquila and Priscilla, those tent-workers with whom he lived during his stay in Corinth.
He wrote the final greeting with his own hand and greets everyone with a holy kiss.