In the Bible, things that are lower down, or under, physically, generally represent things that are lower or more external spiritually. In some cases, the lower things have been separated and put away to protect the good, but in others, it can mean that a less exalted idea or good desire is supporting a more exalted one.

(References: Arcana Coelestia 4564 [1-2], 8610, 9656)

104. The Word Is the Means by Which Those Have Light Who Are Outside the Church and Do Not Have the Word

No conjunction with heaven is possible unless somewhere on earth there is a church which has the Word and where the Lord is consequently known, because the Lord is God of heaven and earth, and there is no salvation apart from the Lord.

It is enough for a church to exist that has the Word, even if it consists of relatively few people. The Lord is still everywhere present by means of the Word throughout the whole world; for by it heaven is conjoined with the human race. To be shown that the conjunction exists by means of the Word, see nos. 62-69 above.