en_tn/rev/03/01.md

General Information:

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

the angel

Possible meanings are that this "angel" is 1) a heavenly angel who protects 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 church. See how you translated "angel" in Revelation 1:20.

Sardis

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

the seven spirits

The number seven is a symbol of completeness and perfection. The "seven spirits" refers either to the Spirit of God or to seven spirits who serve God. See how you translated this in Revelation 1:4. (See: rc://en/ta/man/jit/writing-symlanguage)

the seven stars

These stars are symbols that represent the seven angels of the seven churches. See how you translated this in Revelation 1:16. (See: rc://en/ta/man/jit/writing-symlanguage)

You have a name that you are alive

The word "name" here is a metonym for a reputation. Alternate translation: "You have a reputation for being alive" or "People think that you are alive" (See: rc://en/ta/man/jit/figs-metonymy)

alive ... dead

Obeying and honoring God is spoken of as being alive; disobeying and dishonoring him is spoken of as being dead. (See: rc://en/ta/man/jit/figs-metaphor)