The Seven Churches of Asia are all located in Anatolia; Smyrna (Izmir), Pergamum (Bergama), Thyatira (Akhisar), Sardis (Sart), Philadelphia (Alasehir), Laodiceia ad Lycum (Goncali) and Ephesus (Efes).
These churches are associated both with Saint Paul and with Revelations (the Apocalypse); letters written in c.95 AD to the Seven Churches by John. For some People John is a visionary who lived on the island Patmos. But some people say he is the Apolstle John. There should have been more than seven cities with major Christian congregations in Anatolia at the time That John wrote and it is unknown why he addressed only these seven. These were possibly the most important ones at that time or letters to other churches were lost.
These churches were not church buildings as such but congregations. These early congregations had their meetings in private homes as there had been no original church buildings until the 3C AD. St. Paul possibly founded some of the Seven Churches on his missionary journeys between 47-57 AD, as he was thought to have visited all seven cities.
Symrna : ”These are the words of him who is the First and the Last, who died and came to life again. I know your afflictions and your poverty – yet you are rich! I know the slander of those who say they are Jews and are not, but are a synagogue of Satan. Do not be afraid of what you are about to suffer. I tell you, the devil will put some of you prison to test you, and you will suffer persecution for ten days. Be faithful, even to the point of death, and I will give you the crown of life. He who has an ear, let him her what the Sipirit says to the churches. He who overcomes will not be hurt at all by the second death” ( Rev 2:8-11 )
Pergamum : ”These are the words of him who has the sharp, double-edged sword. I know where you live-where Satan has his thorne. Yet you remain true to my name. You did not renounce your faith in me, even in the eyes of Antipas, my faithful witness, who was put the death in your city-where Satan lives. Nevertheless, I have e few things against you: You have people there who hold to the teaching of Balaam, who taught Balak to entice the Israelites to sin by eating food sacrificed to idols and by committing sexual immorality. Likewise you also have those who hold the teaching of the Nicolaitans. Repent therefore! Otherwise, I will soon come to you and will fight against them with the sword of my mouth. He who has an ear, let him her what the Spirit says to the churches. To him who overcomes, I will give some of the hidden manna. I will also give him a white stone with a new name written on it, know only to him who receives it.” ( Rev 2:12-17 )
Thyatira : ”’These are the words of the son of Got, whose eyes are liked blazing fire and whose feet are like burnished bronze. I know your deeds, your love and faith, your service, and perseverance, and that you are now doing more than you did at first. Nevertheless I have this against you: You tolerate that women Jezebel, who calls herself a prophetess. By her teaching she misleads my servants into sexual immorality and the eating of food sacrificed to idols. I have given her time to repent of her immorality, but she is unwilling. So ý will cast her on a bed of suffering, and I will make those who commit adultery with her suffer intensely, unless they repent of her ways. I will strike her children dead. Then all the churches will know that I am he who searches hearts and uminds, and I will repay each of you according to your deeds. Now I say to the rest of you in Thyatira, to you who do not hold to her teaching and have not learned Satan’s so-called deep secrets ( I will not impose any other burden on you): Only hold on to what you have until I come. To him who overcomes and does my will to the end, I will give authority over the nations-He will rule them with an iron scepter; he will dash them to pieces like pottery’-just as I have received authority from my Father. I will also give him the morning star. He who has an ear, let him her what the Spirit say to churches. ( Rev 2:18-29 )
Sardis : ”These are the words of him who is holds the seven spirits of Gold and seven stars. I know your deeds; you have a reputation of being alive, but you are dead. Wake up! Strengthen what remains and is about to die, for I have not found your deeds complete in the sight of my God. Remember, therefore, what you have received and heard; obey it, and repent. But if you do not wake up, I will come like a thief, and you will knot know at what time I will come to you. Yet you have a few people in Sardis who have not soiled their clothes. They will walk with me, dressed in white, for they are worthy. He who overcomes will, like them, be dressed in white. I will never blot out his name from the book of life, but will acknowledge his name before my Father and his angles. He who has an ear, let him hear what the Spirit says to the churces.” ( Rev 3:1-6 )
Philadelphia: ”These are the words of him who is holy and true, who holds the key of David. What he opens no one can shut, and what he shuts no one can open. I know your deeds. See, I have placed before you an open door that no one can shut. I know that you have little strength, yet you have kept my word and have not denied my name. I will make those who are of the synagogue of Satan, who claim to be Jews though they are not, but are liars I will make them come and fall down at your feet and acknowledge that I have loved you. Since you have kept my command to endure patiently, I will also keep you from the hour of trail that is going to come upon the whole world to test those who live on the earth. I am coming to soon. Hold on to what you have, so that no one will take your crown. Him who overcomes ý will make a pillar in the temple of my God. Never again will he leave it. I will write on him the name of my God and the name of the city of my God, the new Jerusalem, which is coming down out of heaven from my God, and I will also write on him my new name. He who has an ear, let him hear what the Spirit says to the churches.” ( Rev 3:7-13 )
Leodicea : ”These are the words of the Amen, the faithful and true witness, the ruler of God’s creation. I know your deeds, that you are neither cold or hot. I wish you were either! So, because you are luke warm neither hot nor cold I am about to spit you out of my mouth. You say, ‘I am rich; I have acquired wealth and do not need a thing.’ But you do not realise that you are wretched, pitiful, poor, blind and naked. I counsel you to buy from me gold refined in the fire, so you can become rich; and white clothes to wear, so you can cover your shameful nakedness; and salve to put on your eyes, so you can see.” ( Rev3:14-18 )
Ephesus : ”These are the words of him who is holds the seven stars in his right hand and walks among the seven golden lamp stands: I know your deeds, your hard work and your perseverance. I know that you can not tolerate wicked men, that you have tested those who claim to be apostles but are not, and have found them false. You have persevered and have endured hardships for my name, and have not grown weary. Yet I hold this against you: You have forsaken your first love. Remember the height from which you have fallen! Repent and do the things you did at first. If you do not repent, I will come to you and remove your lampstand from its place. But you have this in your favour: You hate the practices of the Nicolaitans, which I also hate. He who has an ear, let him hear what the Spirit says to the churches. To him who overcomes, I will give the right to eat from the tree of life, which is in the paradise of God.!! ( Rev 2:1-7 )