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)
1 John 1:7
7
But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus Christ, his Son, cleanses us from all sin.