In most cases, "mouth" in the Bible represents thought and logic, especially the kind of active, concrete thought that is connected with speech. The reason for this is pretty obvious, but it also holds when people, for instance, remove a stone from the mouth of a well, which represents gaining access to spiritual ideas. The mouth is used for eating as well as speaking, of course. In those circumstances, it represents our first, most external perception of a new spiritual idea or desire. This also makes sense, mirroring the way tasting food in the mouth gives us an instant impression of the quality of the food.

6276. ‘Et dixit, Deus coram Quo ambularunt patres mei, Abraham et Jishak’: quod significet Divinum a quo vitam habuerunt bonum internum et verum internum, constat a significatione ‘Deus’ quod sit Divinum; a significatione ‘ambulare’ quod sit vivere seu vitam habere, de qua n. 519, 1794; et a repraesentatione ‘Abrahami’ quod in supremo sensu sit Ipsum Divinum Domini, et ‘Jishaki’ quod sit Divinum Rationale Ipsius, ita Internum Humanum, ‘Jacob’ enim est Divinum Naturale Domini, seu Externum Humanum Ipsius, de quibus n. 2011, 3245, 3305 fin. , 3439, 4615; in sensu autem repraesentativo est ‘Abraham’ bonum internum, et ‘Jishakus’ verum internum, n. 3703, 6098, 6185; quod haec in sensu repraesentativo significentur per ‘Abrahamum et Jishakum’, est quia ipsum illud bonum et verum quod in regno Domini, procedunt a Divino et Divino Humano Ipsius; et faciunt ut Dominus Ipse sit ibi, ita Ipse regnum Suum.