Revelation 1:20

the mystery of the seven stars which thou sawest in My right hand, and the seven golden candlesticks. The seven stars are the angels of the seven churches, and the seven candlesticks which thou sawest are the seven churches.

The first and immediate effect of the vision upon John: And when I saw Him, I fell at His feet like dead, and He laid His right hand upon me, saying. Fear not. I am the First and the Last and the Living One; and I was dead, and, behold. I am alive forever and ever, and have the keys of death and of hell. That is the first effect of the majestic appearance of the Lord: deadly terror and fear. Sinful man cannot endure the splendor and the purity of the holy God, Genesis 16:14; Isaiah 6:5. But at the same time there is wonderful comfort in the appearance of the Lord in this vision, since it is impossible for His enemies to stand in His sight. For that reason the Lord laid His hand upon John with an assurance of wonderful consolation. The precious Gospel-call "Fear not" was intended to take all the fear out of his heart and to fill him with trust and confidence. What is true of the Lord Jehovah, Isaiah 44:6, is true also of Christ: He is the First and the Last, He is from everlasting to everlasting, the Refuge and the Strength of all believers until the end of time. He is the Living One, John 5:21. He is the Resurrection and the Life; he that believes in Him, though he were dead, yet shall he live; and he that lives and believes in Him shall never die, John 11:25. Christ was dead, He did truly lay down His life in death for the guilt of mankind, but His last cry on the cross, with which He commended His spirit into the hands of His heavenly Father, was a cry of victory, John 10:18; Romans 6:9. By His victory over death and hell Christ is the Living One from eternity to eternity, also according to His human nature. And He has the keys of death and hell, unlimited power to save and to condemn. Those that accept Him in true faith as the Savior of the world will receive at His hands eternal life with all the unspeakable bliss that this implies; those that reject His atonement will receive the sentence of everlasting death and damnation. Sublime majesty and power is evident in every word spoken by the Lord.

Clothed with this authority, He now commands: Write what thou sawest, and what is and what is destined to happen after this, the mystery of the seven stars which thou sawest on My right hand, and the seven golden lamp-stands. The contents of the entire series of visions concerning both the present and the future John was to embody in a book. The matters of the present time were especially those which were spoken of in the seven letters to the Asiatic churches. The Lord wanted to explain to John what He meant by the seven stars, v. 16, and by the seven lamp-stands, or cressets, v. 12; He had a message for His Christians at that time and for all subsequent ages. He Himself explains: The seven stars are angels of the seven congregations, and the seven lamp-stands are the seven congregations. The angels are the ministers of the Lord, the pastors of the congregations, called stars on account of their proclamation of the heavenly doctrine, Malachi 2:7; Daniel 12:3. And the congregations are golden cressets, or lamp-stands, through Christ, who gives them the true value and ornament, and through His Gospel, which is the light in them. This light should shine forth from the individual Christians as well as from the entire congregations, both in Christian confession and in Christian conduct, these two being the chief glory of the Church on earth.

Summary

The prophet introduces the book of his visions with a superscription, a prologue, and with an account of his commission to write, as given him by the Lord Jesus Christ Himself, as the great High Priest of the New Testament.