'Seven Spirits of God' in the Bible

"To the angel of the church in Sardis write the following: "This is the solemn pronouncement of the one who holds the seven spirits of God and the seven stars: 'I know your deeds, that you have a reputation that you are alive, but in reality you are dead.

From the throne came out flashes of lightning and roaring and crashes of thunder. Seven flaming torches, which are the seven spirits of God, were burning in front of the throne

Then I saw standing in the middle of the throne and of the four living creatures, and in the middle of the elders, a Lamb that appeared to have been killed. He had seven horns and seven eyes, which are the seven spirits of God sent out into all the earth.