Saying, I am Alpha and Omega, the first and the last: and, What thou seest, write in a book, and send it unto the seven churches which are in Asia; unto Ephesus, and unto Smyrna, and unto Pergamos, and unto Thyatira, and unto Sardis, and unto Philadelphia, and unto Laodicea. Revelation 1:11
The names if the seven churches are symbolic of the church in different periods of the Christian Era. The number seven indicates completeness, and is symbolic of the fact that the messages extend to the end of time, while the symbols used reveal the condition of the church at different periods in the history of the world.
Christ is spoken of as walking in the midst of the golden candlesticks. Thus is symbolized His relation to the churches. He is in constant communication with His people. He knows their true state. He observes their order, their piety, their devotion....With untiring wakefulness and unremitting vigilance, He watches to see whether the light of any of His sentinels is burning dim or going out. If the candlesticks were left to mere human care, the flickering flame would languish and die; but He is the true watchman in the Lord's house, the true warden of the temple courts. His continued care and sustaining grace are the source of life and light.
Christ is represented as holding the seven stars in His right hand. This assures us that no church faithful to its trust need fear coming to nought, for not a star that has the protection of Omnipotence can be plucked out of the hand of Christ. (The Acts of the Apostles, 585, 586)
Reflection: Starting in Genesis and ending in Revelation, the number seven means completeness. The Bible is full of meaning, and we have the responsibility and the privilege to study and find out what God is telling us.