'Seven Spirits of God' in the Bible

"And to the angel of the church in Sardis write: 'These are the words of him who has the seven spirits of God and the seven stars: I know your works; you have a name of being alive, but you are dead.

From the throne come flashes of lightning, and voices and peals of thunder. And before the throne were seven lamps of fire, which are the seven spirits of God;

And between the throne and the four living creatures and among the elders, I saw a Lamb standing, as if it had been slain, with seven horns and with seven eyes, which are the seven spirits of God sent out into all the earth.