'A hole and cleft of a rock,' in scripture, signifies an obscurity and falsity of faith.

(References: Arcana Coelestia 10582)

'Look not back behind thee,' as in Genesis 19:17, means that Lot, who represents the good of charity, should not look to matters of doctrine. 'To look up,' is to look to celestial things. In Genesis 18:22, looking signifies thinking because seeing denotes understanding.

(References: Arcana Coelestia 2245)