Arcana Coelestia #860
860. From these considerations it also becomes clear that all regeneration advances from evening to morning, as is mentioned six times in Genesis 1 where the regeneration of man is the subject. Here the evening is described in verses 2-3, the morning in verses 4-5. The present verse describes the first ray of light or the morning of this state as 'the tops of the mountains appearing'.
Apocalypse Explained #300
300. Sealed with seven seals. That this signifies altogether hidden, namely, the state of the life of all in heaven and on the earth, is evident from the signification of being sealed with seals, as denoting to be hid, for what is contained in a book sealed with seals, no one knows before it is opened and read; and from the signification of seven, as denoting all persons and all things, also what is full and whole (concerning which see above, n. 257); thus also altogether, because this means fully and wholly.