1 Corinthians 10:31 For if you eat or drink or whatever you do, do it all for the glory of God. ¹
Paul the Apostle  and Sostenes in Ephesus  have been listed as authors of 1st Corinthians. The places discussed in the book include region of Achaea that included the captial City Corinth  around 44 AD. Other cities and regions included Ephesus, Galatia, Jerusalem, and Macedonia.