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.

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

7494. People therefore who either pervert, annihilate, or reject the good of love and the truth of faith residing with them do not have life within themselves. For life received from the Divine consists in willing what is good and believing what is true. But those who do not will what is good, only what is evil, and do not believe what is true, only what is false, possess the opposite of life. This opposite of life is hell and is called death; and those people are called the dead. The fact that the life of love and faith is called life and also eternal life, and those who possess it within themselves are called living persons; and the fact that the opposite of life is called death, and also eternal death, and those [who possess the opposite of life within themselves] are called dead persons, is clear from a large number of places in the Word, such as Matthew 4:16; 8:21-22; 18:8-9; 19:16-17, 29; John 3:15-16, 36; 5:24-25; 6:33, 35, 47-48, 50-51, 53, 57-58, 67; John 8-21, John 24, John 51; 10:10; 11:15, 26; 14:6, 19; 17:7; 20:31; and elsewhere.