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)

9888. 'Before the face of it' means to eternity. This is clear from the meaning of 'before the face' as to eternity; for 'the breastplate' means heaven and every good and truth that constitutes it, 9879. What is 'before the face' in heaven is in the Lord's everlasting sight, thus is preserved to eternity.