Zechariah 3:9 KJV
For behold the stone that I have laid before Joshua; upon one stone shall be seven eyes: behold, I will engrave the graving thereof, saith the LORD of hosts, and I will remove the iniquity of that land in one day.
Revelation 5:6 KJV
And I beheld, and, lo, in the midst of the throne and of the four beasts, and in the midst of the elders, stood a Lamb as it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent forth into all the earth.
Zechariah 4:2 KJV
And said unto me, What seest thou? And I said, I have looked, and behold a candlestick all of gold, with a bowl upon the top of it, and his seven lamps thereon, and seven pipes to the seven lamps, which are upon the top thereof:
Revelation 1:16 KJV
And he had in his right hand seven stars: and out of his mouth went a sharp twoedged sword: and his
countenance was as the sun shineth in his strength.
Revelation 1:20 KJV
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.
It's difficult to know the exact meaning of 'Seven spirits of God'.
What we know:
-7 stars are 7 angels of the 7 churches.
-7 candlesticks are the 7 churches.
-7 eyes on the Lamb are the 7 spirits of God gone into all the earth.
Καὶ εἶδον ἐν μέσῳ τοῦ θρόνου καὶ τῶν τεσσάρων ζῴων καὶ ἐν μέσῳ τῶν πρεσβυτέρων ἀρνίον ἑστηκὸς ὡς ἐσφαγμένον ἔχων κέρατα ἑπτὰ καὶ ὀφθαλμοὺς ἑπτά οἵ εἰσιν τὰ [ἑπτὰ] πνεύματα τοῦ θεοῦ ἀπεσταλμένοι εἰς πᾶσαν τὴν γῆν
The Greek words we're dealing with here are:
[ἑπτὰ] πνεύματα τοῦ θεοῦ
Seven spirits of the God
So clarity within scripture is not available. Whether these 7 spirits are God, proceeding from God, created by God, etc the exact nature of these 7 spirits are undefined. Any further definition than what is found in scripture is speculation.
Charles H. Spurgeon famously preached in his 'The Lamb In Glory' sermon:
The Lamb also works to perfection in nature and in Providence. For with Him are "the seven Spirits of God sent forth into all the earth." This refers not merely to the saving power of the Spirit which is sent forth unto the elect, but to those powers and forces which operate upon all the earth. The power of gravitation, the energy of life, the mystic force of electricity and the like, are all forms of the power of God. A Law of nature is nothing but our observation of the usual way in which God operates in the world. A Law in itself has no power—Law is but the usual course of God's action.
All the Godhead's omnipotence dwells in the Lamb—He is the Lord God Almighty. We cannot put the atonement into a secondary place. For our atoning Sacrifice has all the seven Spirits of God. He is able to save to the uttermost them that come unto God by Him. Let us come to God by Him. He has power to cope with the future, whatever it may be. Let us secure our souls against all dangers, committing ourselves to His keeping.
Scriveners Textus Receptus 1894
Novum Testamentum Graece, Nestle-Aland 26th edition
© 1979, Deutsche Bibelgesellschaft, Stuttgart
The Greek New Testament, 3rd edition
© 1975, United Bible Societies, London