2666. 'In Isaac will your seed be called' means that from the Lord's Divine Human all salvation is available to those in whom good exists. This is clear from the representation of 'Isaac' as the Divine Rational, dealt with already, and so as the Divine Human, since it is in the inmost part of the rational that the human has its beginnings, 2106; and from the meaning of 'seed', used in reference to Isaac, as the celestial rational, or what amounts to the same, as those who are celestial, dealt with in 2085, 2661. 'Your seed being called' accordingly means that they are heirs, and that salvation as a consequence is theirs. Those who are spiritual are also 'the seed', but from the son of the servant-girl, as stated in the next verse, 'And also the son of the servant-girl I will make into a nation, because he is your seed'. Consequently salvation is available to the spiritual as well, provided good exists in them, as will be clear from the internal sense of those words. The Lord too teaches the same in many places, and explicitly so in John,

As many as received Him, to them He gave power to be sons of God, to those believing in His name, who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God. John 1:12-13.

2106. That 'Abraham was a son of ninety-nine years' means the state and the period of time prior to the union of the Lord's Divine Essence with His Human Essence is clear from the meaning of 'ninety-nine years' as the period of time before the Lord fully joined the Internal Man to the Rational, dealt with above in 1988. The Lord's Internal Man, as stated frequently already, was Jehovah Himself, that is, the Divine Itself which, once united to the Human, is the Rational, for the human begins in the inmost part of the rational and from there extends itself to one's external.