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 #4873
4873. '[And he said'] What is the pledge that I am to give you?' means that which made it certain. This is clear from the meaning of 'the pledge' as that which served to make it a certainty, dealt with immediately above in 4872. This meaning - that which made it certain - is also evident from what follows next regarding the pledge that was given.