'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.

(Reference: Arcana Coelestia 2245)

5151. 'This is the interpretation of it' means what it held within it. This is clear from the meaning of 'the interpretation' as what something holds within it, that is, what lies within, dealt with above in 5093, 5105, 5107.