2194. 'And behold, Sarah your wife will have a son' means the Rational that was to be Divine. This is clear from the meaning of 'a son', also of 'Sarah', and of 'Isaac' as well, who was to be born to her. Both 'a son' and 'Sarah', and 'Isaac' too, mean that which is a feature of the Lord's Rational; for '5011' means truth, see 489, 491, 533, 1147, 'Sarah' rational truth, 2173, and 'Isaac' the Divine Rational, 1893, 2066, 2083. With everyone the human has its beginnings in the inmost part of the rational, as stated in 2106, so that the Lord's Human too had its beginnings there. That which was above it was Jehovah Himself, which is not the case with anyone else at all. Since the human has its beginnings in the inmost part of the rational, and since the Lord made the whole of the human with Him Divine, He first made the rational itself Divine from the inmost. And that rational, having been made Divine, is represented and meant, as has been stated, by 'Isaac'.

2083. 'And you will call his name Isaac' means the Divine Rational. This is clear from Isaac's representation and also from the meaning of his name in the internal sense.

From Isaac's representation: As stated frequently already, 'Abraham' represents the Lord's Internal Man, 'Isaac' His Rational Man, and 'Jacob' His Natural Man. The Lord's Internal Man was Jehovah Himself. Because the Rational Man was conceived from the influx of the Internal Man into the External Man's affection for knowledge, 1896, 1902, 1910, it originated in the Divine thus joined to the Human. Consequently the first rational represented by 'Ishmael' was human, but it was made Divine by the Lord, and is then represented by 'Isaac'.

From the meaning of his name: He was given the name Isaac from the word for 'laughter', and because laughter in the internal sense means the affection for truth, which belongs to the rational, as shown above in 2072, Isaac accordingly here means the Divine Rational.

[2] From His own power the Lord made Divine everything that was human with Him. Thus He made not only the rational Divine but also the sensory part, interior and exterior, and so the body itself. In this way He united the Human to the Divine. It has been shown already that not only the rational, but also the sensory part, and so the whole body also was made Divine and Jehovah. This may also become clear to anyone from the fact that He alone has risen as to the body from the dead, and sits at the right hand of the Divine Power both with His entire Divine and with His entire Human. 'Sitting at the right hand of Divine power' means having all power in heaven and on earth.