5843. 'And let the boy go up with his brothers' means in order that interior truth may be joined to spiritual good. This is clear from the representation of 'Benjamin' as new truth, dealt with in 5804, 5806, 5809, 5822, and so interior truth; and from the meaning of 'going up with his brothers' as becoming joined once again to his father, that is, to spiritual good, which 'Israel' represents. Interior truth, which 'Benjamin' represents here, is new truth, because this is interior when considered in relation to the truths below it. For truth which goes forth from good is interior truth, this truth being meant because it springs from spiritual good, which is 'Israel'. When the good of charity springs from the will, and so from affection, it is internal good or the good of the internal Church; but when the good of charity springs not from affection but from obedience, not from the will but from religious teaching, it is external good or the good of the external Church. The same applies to the truths that spring from good.

5822. 'If our youngest brother is with us we will go down' means unless the intermediary that accomplishes the joining together is with them. This is clear from the representation of Benjamin, to whom youngest brother' refers here, as the intermediary that accomplishes the joining together, dealt with in 5411, 5413, 5443, 5639, 5688. The implications of this - that 'Benjamin' represents the intermediary between the celestial of the spiritual or internal good, which is 'Joseph', and the truths in the natural, which are 'the ten sons of Jacob', as well as representing new truth, see above in 5804, 5806, 5809 - are as follows: To be an intermediary, the intermediary must be derived both from the internal and from the external; otherwise it is not an intermediary that accomplishes a joining together.

[2] The intermediary, which 'Benjamin' represents, derives from the external or natural its existence there as new truth; for the new truth represented by him exists in the natural because it springs from spiritual good from the natural, which his father as Israel represents, 5686, 5689. But that intermediary derives from the internal the quality that 'Joseph' represents, by means of influx. This is how it is derived from both and is the reason why 'Benjamin' represents the intermediary that accomplishes the joining together, as well as representing new truth. He represents new truth when he is present with his father, the intermediary accomplishing the joining together when he is with Joseph. This is an arcanum for which no clearer explanation is possible; nor can it be understood except by those who are aware of the fact that a person has an internal and an external that are distinct and separate from each other, and who at the same time have an affection for knowing truths. The understanding part of these people's minds is lit by the light of heaven, enabling them to see what others do not see, including this arcanum.