Revelation 1:4

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;

Ver. 4. From him which is] An august description of the Father by a manifest allusion to Exodus 3:14. Some critic reading the words απο ο ων και ο ην as they lie in the original, would be apt to complain of an incongruity, and to say, Nove et duriter dictum. But God, methinks, should have leave given him by these Logodaedali, to pronounce his own name undeclined, and by an outrule, who himseff is undeclined, and comes not under any rule. Non debent verba caelestis oraculi subesse regulis Donati. (Greg.)

And from the seven spirits] So the Holy Ghost is here called, for his manifold gifts and operations in the hearts of those seven, and all other Churches. In like sort he is called the seven golden pipes through which the two olive branches do empty out of themselves the golden oils of all precious graces into the golden candlestick the Church, Zechariah 4:2,3. So some interpret those seven eyes upon one stone, Zechariah 3:9, concerning the Spirit in his several operations upon Christ, according to Isaiah 11:2. There is a prophetic perfection of this number of seven, with which the Spirit of God is much delighted in this prophecy; seven Churches, seven stars, seven candlesticks, seven lamps, seven seals, &c.