2623. A son. That this signifies the Divine rational is evident from the signification of a “son.” In the internal sense of the Word a “son” signifies truth (n. 489, 491, 533); and as truth is the chief thing in the rational (n. 2072, 2189), the rational is also signified by a “son;” but here the Divine rational, in which principally there is good, which Isaac, who is the “son,” also represents (concerning which hereafter).

3373. 'And to your seed' means truth. This is clear from the meaning of 'seed' as truth, dealt with in 29, 255, 1025, 1447, 1610, 1940, 2848, 3310, and so truth from the Lord's Divine, which is 'your seed'. Those who understand the Word solely according to the sense of the letter can know no more than this, that 'seed' means descendants - here Isaac's descendants through Esau and Jacob, primarily through Jacob since the Word existed among that nation and so many of its historical descriptions have to do with them. But in the internal sense 'seed' is not used to mean any descendants from Isaac but all who are the Lord's 'sons', and so who are 'the sons of His kingdom', or what amounts to the same, those in whom good and truth which come from the Lord are present. And as these constitute 'the seed' it follows that good and truth themselves from the Lord are 'the seed', for these are what make people His 'sons'. This is also the reason why truths themselves which come from the Lord are called 'the sons of the kingdom' in Matthew,

He who sows the good seed is the Son of Man, the field is the world, the seed are the sons of the kingdom. Matthew 13:37-38.

And for this reason also 'sons' generally means truths, 489, 491, 533, 1147, 2623.

[2] Anyone who thinks rather more deeply or inwardly may recognize that the seed of Abraham, Isaac, and Jacob, mentioned so many times, and spoken of so many times as those who were to be blessed, and more so than all nations and peoples in all the world, cannot in the Divine Word mean the descendants of those three. For among all nations they least of all were moved by the good that flows from love to the Lord and from charity towards the neighbour. Nor indeed did any truth of faith exist with them. Who the Lord is, what His kingdom is, and so what heaven is and what the life after death, they did not know at all. They did not know these things because for one thing they did not wish to know and for another because if they had come to know about them they would have denied them completely in their hearts and so would have profaned interior goods and truths, as they did exterior by becoming on so many occasions open idolaters. This is the reason why any interior truths are rarely visible in the literal sense of the Old Testament Word. Because the nature of those people was such, the Lord therefore said about them, quoting Isaiah,

He has blinded their eyes and hardened their heart, lest they see with their eyes and understand with their heart, and are converted and I heal them. John 12:40.

What He said about them when they declared they were 'the seed of Abraham',

They said, We are the seed of Abraham. Our father is Abraham. Jesus said to them, If you were Abraham's sons, you would do the works of Abraham. You are from your father the devil, and the desires of your father you will to do. John 8:33, 39, 44.

Here also 'Abraham' is used to mean the Lord, as in every other instance in the Word. The Lord explicitly states that they were not His seed or sons but came from the devil. From this it is quite evident that 'the seed of Abraham, Isaac, and Jacob' in both the historical part and the prophetical part of the Word is in no way used to mean such descendants, for the Word is Divine in every detail Instead it means all who constitute 'the Lord's seed', that is, those with whom the good and truth of faith in Him are present. The fact that heavenly seed, that is, all good and truth, comes from the Lord alone, see 1438, 1614, 2016, 2803, 2882, 2883, 2891, 2892, 2904, 3195.

2904. 'The life of Sarah was' means all the preceding times and states of the Church as regards Divine truths. This becomes clear from the meaning of 'the life' here, and from the representation of 'Sarah'. 'The life' here - since it refers to the whole span of life and to the periods that constitute it, namely early childhood, youth, adult years, and old age means states, as do all periods of time in general, see 2625, 2788, 2837. And since the subject in what follows is the Church, 'the life' therefore means times and states of the Church. 'Sarah' represents Divine truth, see 1468, 1901, 2063, 2172, 2173, 2198, 2507. From this it follows that here 'the life of Sarah was' means in the internal sense all the preceding times and states of the Church as regards Divine truths. When she lived as Abraham's wife Sarah represented the Lord's Divine Truth joined to His Divine Good, as may be seen in the paragraphs just quoted. And as she represented the Lord's Divine Truth, so she also means the Church's Divine truth, for in the Church no other truth exists than that which is the Lord's. Truth that does not come from Him is not truth, as is also clear both from the Word itself and from the doctrine of faith drawn from it. It is clear from the Word itself in John,

Man cannot receive anything unless it is given him from heaven. John 3:27.

And elsewhere in John,

Without Me you can do nothing. John 15:5.

The same is also clear from the doctrine of faith, which teaches that the whole of faith, that is, all truth, comes from the Lord.

[2] The representatives and the meaningful signs in the Word are such that every single one in the highest sense has regard to the Lord; and from this springs the life itself of the Word. And because they have regard to the Lord, they also have regard to His kingdom, since the Lord is the All in His kingdom. Divine things from the Lord within His kingdom are what make it the kingdom. To the extent therefore that an angel, spirit, or man receives good and truth from the Lord, and believes that these come from Him, he is in His kingdom. But to the extent that he does not receive them, and does not believe that they come from the Lord, he is not in His kingdom. Thus Divine things from the Lord are what constitute His kingdom or heaven; and this is what is meant when it is said that the Lord is the All in His kingdom.