This portion of Al-Kitab takes its name from people to whom it was originally written–followers of ‘Isa al-Masih who lived in the city of Ephesus. Ephesus was located in what is now modern-day Turkey. The apostle Paul (pbuh) wrote this letter to explain a “mystery,” or previously-hidden truth now being revealed. The “mystery” is this–that Allah has made an ummah composed of Jews and non-Jews of all nations together. By faith in ‘Isa al-Masih both Jews and non-Jews can be part of Allah’s spiritual family. By becoming one with ‘Isa al-Masih, all believers are one with each other. This ummah is called the “body” of al-Masih. ‘Isa al-Masih himself is the “head” of the ummah, his “body.” Another comparison is made from building construction in which the ummah is said to be a building, and ‘Isa al-Masih is the “cornerstone.” Also, the ummah is a “bride” and ‘Isa al-Masih is the “groom.” This scripture also says much concerning love, forgiveness, mercy, and holy living.