Rev 1:1 KJV] 1 The Revelation of Jesus Christ, which God gave unto him, to shew unto his servants things which must shortly come to pass; and he sent and signified [it] by his angel unto his servant John:
Revelation is written to Israel.
[Lev 25:55 KJV] 55 For unto me the children of Israel [are] servants; they [are] my servants whom I brought forth out of the land of Egypt: I [am] the LORD your God.
[Neh 1:6 KJV] 6 Let thine ear now be attentive, and thine eyes open, that thou mayest hear the prayer of thy servant, which I pray before thee now, day and night, for the children of Israel thy servants, and confess the sins of the children of Israel, which we have sinned against thee: both I and my father's house have sinned.
The book of Revelation shows his servants what must come to pass. His servants are Israel as seen in the two verses above.
[Rev 1:4 KJV] 4 John to the seven churches which are in Asia: Grace [be] unto you, and peace, from him which is, and which was, and which is to come; and from the seven Spirits which are before his throne;
John wrote to the seven churches in Asia.
[1Pe 1:1 KJV] 1 Peter, an apostle of Jesus Christ, to the strangers scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia,
The seven churches in Revelation are, I believe, Jewish believing remnant churches. 1 Peter above supports the belief that these churches were established in Asia.
[Act 16:6-7 KJV] 6 Now when they had gone throughout Phrygia and the region of Galatia, and were forbidden of the Holy Ghost to preach the word in Asia, 7 After they were come to Mysia, they assayed to go into Bithynia: but the Spirit suffered them not.
Paul was forbidden from going to Asia and Bithynia by the Holy Ghost; Peter wrote to the scattered believing Jews in these regions. There must have been remnant churches of believing Jews in Asia and Bithynia since Paul would not preach the gospel to believing Jews ([Rom 15:20 KJV] 20 Yea, so have I strived to preach the gospel, not where Christ was named, lest I should build upon another man's foundation:).
[Rev 1:9 KJV] 9 I John, who also am your brother, and companion in tribulation, and in the kingdom and patience of Jesus Christ, was in the isle that is called Patmos, for the word of God, and for the testimony of Jesus Christ.
Another reason to believe Revelation was written to Jewish believers is that John was saying he was their brother; he was saying he was a fellow Israelite.
These seven churches may well have existed when John wrote his letters. John in saying he is companion in tribulation, identifies the letters as benefiting future Jewish churches facing the great tribulation.
Revelation is written to Israel.
[Lev 25:55 KJV] 55 For unto me the children of Israel [are] servants; they [are] my servants whom I brought forth out of the land of Egypt: I [am] the LORD your God.
[Neh 1:6 KJV] 6 Let thine ear now be attentive, and thine eyes open, that thou mayest hear the prayer of thy servant, which I pray before thee now, day and night, for the children of Israel thy servants, and confess the sins of the children of Israel, which we have sinned against thee: both I and my father's house have sinned.
The book of Revelation shows his servants what must come to pass. His servants are Israel as seen in the two verses above.
[Rev 1:4 KJV] 4 John to the seven churches which are in Asia: Grace [be] unto you, and peace, from him which is, and which was, and which is to come; and from the seven Spirits which are before his throne;
John wrote to the seven churches in Asia.
[1Pe 1:1 KJV] 1 Peter, an apostle of Jesus Christ, to the strangers scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia,
The seven churches in Revelation are, I believe, Jewish believing remnant churches. 1 Peter above supports the belief that these churches were established in Asia.
[Act 16:6-7 KJV] 6 Now when they had gone throughout Phrygia and the region of Galatia, and were forbidden of the Holy Ghost to preach the word in Asia, 7 After they were come to Mysia, they assayed to go into Bithynia: but the Spirit suffered them not.
Paul was forbidden from going to Asia and Bithynia by the Holy Ghost; Peter wrote to the scattered believing Jews in these regions. There must have been remnant churches of believing Jews in Asia and Bithynia since Paul would not preach the gospel to believing Jews ([Rom 15:20 KJV] 20 Yea, so have I strived to preach the gospel, not where Christ was named, lest I should build upon another man's foundation:).
[Rev 1:9 KJV] 9 I John, who also am your brother, and companion in tribulation, and in the kingdom and patience of Jesus Christ, was in the isle that is called Patmos, for the word of God, and for the testimony of Jesus Christ.
Another reason to believe Revelation was written to Jewish believers is that John was saying he was their brother; he was saying he was a fellow Israelite.
These seven churches may well have existed when John wrote his letters. John in saying he is companion in tribulation, identifies the letters as benefiting future Jewish churches facing the great tribulation.