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.

2085. 'For his seed after him' means those who would have faith in the Lord. This is clear from the meaning of 'seed' as faith, dealt with already in 1025, 1447, 1610, 2034. 'Seed' here means those who have faith grounded in love, that is, who have love to the Lord, and who are therefore celestial people or those who belong to the celestial Church, for the seed descending from Isaac is the subject. Those however who have faith grounded in charity, that is, who have charity towards the neighbour, and who are therefore spiritual people or those who belong to the spiritual Church, are meant by 'Ishmael' who is the subject in the next verse. For the distinction between celestial people and spiritual, see above 2069, 2078, and also for the distinction between having love to the Lord and having charity towards the neighbour, 2023.