5586. 'Unless your brother is with you' means unless the intermediary is with you. This is clear from the representation of 'Benjamin' as the intermediary, dealt with in 5411, 5413, 5443. The intermediary represented by 'Benjamin' serves as the link between the internal and the external, that is, between the spiritual man and the natural man; also, it is the truth of good that goes forth from truth from the Divine, represented by 'Joseph'. This truth of good is called the spiritual of the celestial - 'Benjamin' being the spiritual of the celestial, see 3969, 4592. A person's internal and external are completely distinct and separate from each other; for his internal dwells in the light of heaven, his external in the light of the world. And being completely distinct and separate they cannot be joined together except through the intermediary which derives its existence from both of them.

5443. 'And behold, the youngest is with our father today' means that they are also joined to spiritual good. This is clear from the representation of Benjamin, to whom 'the youngest' refers here, as the intermediary effecting a joining together, dealt with below; and from the representation of Jacob, who by now was Israel, to whom 'father' refers here, as spiritual good, dealt with in 3654, 4598. 'Benjamin' is the spiritual of the celestial, which is the intermediary, see 4592, 5411, 5413, 5419. That is to say, it is the intermediary that links the natural, or what is present in the natural, to the celestial of the spiritual, which is 'Joseph'. And since 'Benjamin' is the intermediary, while 'Israel' is spiritual good, the words 'behold, the youngest is with our father today' therefore mean a joining to spiritual good.