Then you shall make the lamps [of the lampstand] seven in number [with one lamp at the top of the shaft]. The priests shall set up its seven lamps so that they will light the space in front of it.
So we have the prophetic word made more certain. You do well to pay [close] attention to it as to a lamp shining in a dark place, until the day dawns and light breaks through the gloom and the morning star arises in your hearts. [Num 24:17]
As for the mystery of the seven stars which you saw in My right hand, and the seven golden lampstands: the seven stars are the angels (divine messengers) of the seven churches, and the seven lampstands are the seven churches.
From the throne came flashes of lightning and [rumbling] sounds and peals of thunder. Seven lamps of fire were burning in front of the throne, which are the seven Spirits of God; [Ex 19:16-20a]