en_tn/rev/02/12.md

General Information:

This is the beginning of the Son of Man's message to the angel of the church in Pergamum.

the angel

Possible meanings are that this "angel" is 1) a heavenly angels who protect this church or 2) a human messenger to the church, either a messenger who went from John to the church or the leader of the churches. See how you translated "angel" in Revelation 1:20

Pergamum

This is the name of a city in a part of western Asia that today is modern Turkey. See how you translated this in Revelation 1:11. (See: rc://en/ta/man/translate/translate-names)

the sword with two sharp edges

This refers to a double-edged sword, which is sharpened on both sides to cut both directions. See how you translated this in Revelation 1:16