Eph 4:4 There is one body, and one Spirit, even as ye are called in one hope of your calling.
2Co 3:17 Now the Lord is that Spirit: and where the Spirit of the Lord is, there is liberty.
There is only one Spirit, and the Lord is that Spirit.
The 7 Spirits are not 7 entities.
And the 7 Spirits are not the 7 Churches in Revelation, for some of them had some serious flaws, which one was called the synagogue of Satan, and Jesus possesses the 7 Spirits so He would not be identified with a Church not doing proper.
I believe the 7 Churches is the way the Church age will go, although God always has people in the truth, for you can see the Roman Catholic Church, then the Protestant movement, then the 6th Church where Jesus did not have a problem with them, and said He will deliver them from the temptation that shall come upon the whole world to try all them that dwell on earth.
Which there can only be one temptation that can come upon the whole world at the same time, and that is when the nations come together and say Peace and safety as they try to establish peace on earth, which God said multitudes, multitudes, in the valley of decision, for the day of the LORD is near in the valley decision, for will they stay with God, get with God, or follow the world.
Paul said the saints will not be deceived when they say Peace and safety, for they will know it is not of God, and Jesus will deliver the saints in the truth from that temptation.
So the 6th Church is here, now it is the 7th Church where the saints will say they have need of nothing, and increased with goods, and rich, doing good financially, but do not realize that they are wretched, and miserable, and poor, and blind, and naked.
Which see many that claim Christ believe the prosperity Gospel that God blesses with money, and material things, and love money, and material things, which this could of not happened in the past without technology that caused money to flow like a raging river, and material things to be in abundance, and the last generation, which is now, will devour the poor from off the earth, and the needy from among men, which could of not happened in the past without technology.
Rev 5:6 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.
The seven Spirits of God are sent into all the earth, so they might be attributes to help people in their walk with God.
7 is referred to as perfection and completion.
The Bible does not say what the 7 Spirits are but they might be the attributes of God, perfection, completion, the Holy Spirit in the fulness, or they may be 7 attributes that are given to the saints to perfect, and complete them, for they are sent in to all the earth, like Jesus was perfect, and complete, in the eyes of God, who possesses the seven Spirits, which it states in the midst of the throne a Lamb who was slain, who is the man Christ Jesus.
I tend to believe the man Christ Jesus as perfect, and complete, and that is why the seven Spirits are sent in to all the earth to perfect, and complete, the saints.
But there is only one Spirit as a being, and the Lord is that Spirit.
We know we must have more than one attribute when living for the Lord like love, hope, wisdom, and the such, so it might be something like that, for the Lamb that was slain who is the man Christ Jesus, a human, has the 7 Spirits, so it might be 7 attributes that make a saint, a human, perfect, and complete, like the man Christ Jesus, and that is why they are sent in to all the earth.