The apostle John is instructed to write to the “angels” of the seven churches in Asia, a Roman province that is now part of modern Turkey. Some interpreters believe the angels to be human messengers, perhaps the pastors of these churches, while others argue that the Greek word aggeloi in Revelation is used overwhelmingly of spirit beings and therefore in this context means guardian angels.
In any case, the “angel” of each church bears the responsibility of sharing an important message from Christ with the congregation.
There is little controversy among Bible interpreters concerning the letters to the seven churches, primarily because these letters do not predict future events. This does not mean, however, that the four major views of Revelation – preterist, historicist, futurist, and idealist – are in complete agreement.
For example, interpreters from the preterist and idealist schools, and some from the futurist school, “understand the letters to be addressed to the actual, historic churches named in them, and by extension to any churches that may find themselves in similar circumstances to theirs” (Steve Gregg, Revelation: Four Views, p. 62).