Apocalypse Explained # 528
528. Verse 13. And I saw, and I heard one angel flying in midheaven, saying with a great voice, Woe, woe, woe, to those that dwell on the earth, from the remaining voices of the trumpet of the three angels who are about to sound.
13. "And I saw, and I heard one angel flying in midheaven," signifies the Lord enlightening all in the heavens respecting the state of the church at its end n. 529; "saying with a great voice," signifies manifestation (n. 530); "Woe, woe, woe, to those that dwell on the earth, from the remaining voices of the trumpet of the three angels who are about to sound," signifies grievous lamentation over the changes of state of the church, on account of the aversion from good and truth, and consequent damnation (n. 531, 532).
Arcana Coelestia # 9601
9601. 'And the breadth four cubits' means the marriage of truth to good. This is clear from the meaning of 'the breadth' as truth, dealt with in 1613, 3433, 3434, 4482, 9487; and from the meaning of 'four' as a joining together, dealt with in 1686, 8877, and so a marriage since truth and good joined together is called the heavenly marriage, 2173, 2618, 2728, 2729, 2803. 'Four' means a joining together or a marriage because this number is the product of two multiplied by itself, and 'two' means a joining together, 5194, 8423, multiple numbers being similar in meaning to the simple ones that are their factors, as stated immediately above in 9600. All numbers in the Word mean spiritual realities, see the places referred to in 9488.