Seven, as in Revelation 15:1, signifies everything in an universal sense. The number 'seven' was considered holy, as is well known, because of the six days of creation, and the seventh, which is the celestial self, where peace, rest, and the Sabbath is. The number seven occurs so frequently in the rites of the Jewish church and is held holy everywhere.

So times were divided into seven, longer and shorter intervals, and were called weeks, like the great intervals of times till the coming of the Messiah, in Daniel 9:24-25. The time of seven years is called 'a week' by Laban and Jacob, as in Genesis 29:27-28. So wherever the number seven occurs, it is considered holy and sacred, as in Psalm 119:164, and in Isaiah 30:26.

As the periods of a person's regeneration are distinguished into six, prior to the seventh, or the celestial self, so the times of vastation are also distinguished, until nothing celestial is left. This was represented by the many captivities of the Jews, and by the last Babylonian captivity, which lasted seven decades, or seventy years. This was also represented by Nebuchadnezzar, in Daniel 4:16, 22, 29. It also refers to the vastation of the end times, in Revelation 15:1, 7-8. They should 'tread the holy city under foot, forty and two months, or six times seven,' as in Revelation 11:2 and Revelation 5:1. So the severity and increments of punishment were expressed by the number seven, as in Leviticus 26:18, 21, 24, 28 and Psalm 79:12.

(Referências: Apocalypse Explained 5, 7-8, 15; Arcana Coelestia 395; Daniel 9, 9:24, 9:25; Psalms 119)

6. Which God gave Him, to show unto His servants, signifies for those who are in truths from good. This is evident from the signification of "gave Him to show the revelation," as being to declare predictions, that is to say, predictions for those; and from the signification of "His servants," as being, who are in truths from good. Such are meant by servants of God, because those who hearken to and obey God are called, in the Word, servants of God. Hearkening and obedience take place with those who are in truths from good, but not with those who are in truths alone, or in truths without good; for these have truths in the memory only, and not in the life; whereas those who are in truths from good have truths in the life, and those who have truths in the life do them from the heart, that is, from love. Be it known, that no truth ever enters into the life of man unless the man be in good, for good is of love, and love makes the whole man; man therefore receives into his life all truths that are in accord. This may be abundantly seen from the fact, that whatever a man loves he appropriates to himself; and everything else he casts from him, yea, holds it in aversion. By good is here meant the good of love to the Lord and the good of love towards the neighbor; for this good is the only spiritual good, and with this truths of faith are in accord.