Apocalypse Explained#432
432. Verse 5. Of the tribe of Judah were sealed twelve thousand. Of the tribe of Reuben were sealed twelve thousand. Of the tribe of Gad were sealed twelve thousand.
"Of the tribe of Judah were sealed twelve thousand," signifies love to the Lord, and that all who are in that love are in heaven, and come into heaven. "Of the tribe of Reuben were sealed twelve thousand," signifies the light of truth from that good, and that all who are in that light are in heaven, and come into heaven. "Of the tribe of Gad were sealed twelve thousand," signifies the good of life thence.
Arcana Coelestia#6363
6363. 'Judah are you' means the celestial Church. in the highest sense the Lord's Divine celestial. This is clear from the representation of 'Judah' in the highest sense as the Lord's Divine love, which is His Divine celestial; but in the relative sense the Lord's celestial kingdom, thus the celestial Church, is meant, dealt with in 3881. What the celestial kingdom is, or the celestial Church, and what the celestial is, see 640, 641, 765, 895, 2048, 2088, 2669, 2708, 2715, 2718, 2896, 3275, 3246, 3774, 3886, 3887, 4448, 4497, 5113, 5921, 6295.