2719. The subject dealt with first in this chapter is the Lord's Rational, which was made Divine and is represented by Isaac, also the merely human rational that was separated from Him and is represented by the son of Hagar the Egyptian. Immediately after that the subject is the spiritual Church which was saved by means of the Lord's Divine Human, and is represented by Hagar and her boy. Now the subject is the doctrine of faith that was to be of service to that Church, that is to say, the merely human rational ideas based on facts were allied to it, which ideas are represented by 'Abimelech and Phicol'. This alliance is meant by 'the covenant' that Abraham made with them. Those rational ideas are appearances that come not from a Divine but from a human origin. They were allied to it for the reason that without them the spiritual Church would not be able to have any grasp of doctrine and so would not receive it. For, as shown in 2715, the member of the spiritual Church, compared with the member of the celestial Church, dwells in obscurity, and doctrine has therefore to be shrouded in appearances such as make up human thought and affection, though these appearances must not be so at variance that Divine Good cannot find in them some receptacle for itself. Since a description occurs again, in Chapter 26, of Abimelech, and of a covenant, though in that place he makes it with Isaac, and since the subject in the internal sense is the rational ideas and the factual knowledge linked a second time to the doctrine of faith, let merely a summary explanation be given of what is contained at this point in the internal sense. A clearer understanding of these matters will emerge from the explanation of Chapter 26.