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).
Ground
“Earth” refers to the externals of a person or a community -- their everyday thoughts and actions -- in a broad, general sense. “Ground” refers to the parts of our external lives that are ready for cultivation, ready to be put to use. Cultivation, of course, involves loosening up the soil (breaking down our distracting habits and thoughts) and planting seeds (true concepts and ideas that spring from a desire to be good). As those seeds start growing, we begin to be truly useful. In short, then, “ground” in the Bible can mean a person or community that is receptive to the Lord's teaching. It can also mean a person or church that has received the Lord's teaching and is putting it to use.