Apocalypse Explained # 432
432. Verse 5. Of the tribe of Judah twelve thousand sealed; of the tribe of Reuben twelve thousand sealed; of the tribe of Gad twelve thousand sealed.
5. "Of the tribe of Judah twelve thousand sealed," signifies love to the Lord, and that all who are in that love are in heaven, and come into heaven n. 433; "of the tribe of Reuben twelve thousand sealed," signifies the light of truth from that good, and that all who are in that light are in heaven and come into heaven n. 434; "of the tribe of Gad twelve thousand sealed," signifies the consequent good of life (n. 435, 436).
Arcana Coelestia # 3961
3961. 'And she called his name Zebulun' means the essential nature of it. This is clear from the meaning of 'calling the name' as the essential nature, dealt with above. He was given the name Zebulun from the expression 'dwelling together', a name which embodies the things stated immediately above in 3960 about 'dwelling together', and at the same time the things meant in the rest of the words uttered by Leah.