'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)

4709. ‘Nonne fratres tui pascentes in Shechem?’: quod significet quod doceant, constat ex significatione ‘pascere’ quod sit docere, de qua mox supra n. 4705; et ex significatione ‘Shechem’ quod sint prima rudimenta doctrinae de fide, de qua mox supra n. 4707.