'The Lord's throne' signifies, in general, the whole heaven, and specifically, the spiritual heaven, and by extension, divine truth proceeding, and so, everything of heaven and the church.

In Genesis 41:40, this signifies things that are natural. (Arcana Coelestia 5313)

In Exodus 11:5, this signifies the falsified truths of faith that have wrongly receive attention. (Arcana Coelestia 7779)

'The throne built by Solomon,' as mentioned in 1 Kings 10:18-20, signifies both royalty and judgment.

In Isaiah 66:1, this signifies celestial and spiritual things which when they relate to the Divine are like natural things to man's spiritual and celestial. (Arcana Coelestia 2162[8])

In Matthew 25:31, this signifies judgment. (Arcana Coelestia 4809[3])

In Revelation 1:4, this signifies the universal heaven. 'Throne' signifies heaven and judgment.

'Throne,' as in Revelation 4:2, signifies a representation of judgment, because the things which John saw were representative visions. He saw them as he described them, but they were forms representative of things to come.

In Revelation 8:2, this signifies the church regarding doctrine.

'Throne,' as in Revelation 12:5, signifies the angelic heaven.

'Throne' also signifies the government of falsity and evil in Revelation 2:13, 8:2, Daniel 7:9, Haggai 2:22, and Isaiah 14:13.

(Референце: Apocalypse Explained 8 [2], 289)

289. To Him that sitteth upon the throne, that liveth unto ages of ages, signifies from whom are all things of heaven and of the church and eternal life. This is evident from the signification of "throne," as being, in reference to the Lord, in general the whole heaven, in particular the spiritual heaven, and abstractly Divine truth proceeding; and as through this the heavens have existence, therefore "throne" here signifies all things of heaven and of the church (See above n. 253; that "He that sitteth upon the throne" is the Lord, see also above (n. 267, 268). This is also evident from the signification of "living unto ages of ages," as being that eternal life is from Him (See above, n. 84); for "He that liveth" signifies that He alone is life, and therefore that everything of life with angels and men is from Him; and "unto ages of ages" signifies eternity. "Unto ages of ages" signifies eternity because in the world it signifies time throughout its whole extent; but in heaven, where there is not time like that in the world, it signifies eternity; for the sense of the letter of the Word is made up of such things as are in the world, but its spiritual sense is made up of such things as are in heaven; and this in order that the Divine may close into the natural things of the world as into its ultimates, and may rest in them, and subsist upon them; therefore it is said, "ages of ages," and not eternity.