Lip
'A lip' in general signifies doctrine.
In Isaiah 6:3, 7, this signifies the interior parts of a person and thus internal worship where adoration is grounded.
In Isaiah 37:29, this signifies the thought of the understanding
In Malachi 2:6, 7, this denotes doctrine grounded in charity.
(Verweise: Arcana Coelestia 1284, Arcana Coelestia 1288)
Look
'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.
(Verweise: Arcana Coelestia 2245)