23. Nothing is more common in the Word than for the word 'day' to be used to mean the particular time at which events take place, as in Isaiah,

The day of Jehovah is near. Behold, the day of Jehovah comes. I will make heaven tremble, and the earth will be shaken out of its place, on the day of My fierce anger. Its time is close at hand, and its days will not be prolonged. Isaiah 13:6, 9, 13, 22.

And in the same prophet,

Her antiquity is in the days of antiquity. On that day Tyre will be forgotten for seventy years, like the days of one king. Isaiah 23:7, 15.

Since 'day' stands for the particular time it also stands for the state associated with that particular time, as in Jeremiah, Woe to us, for the day has declined, for the shadows of evening have lengthened! Jeremiah 6:4

And in the same prophet,

If you break My covenant that is for the day and My covenant that is for the night, so that there is neither daytime nor night at their appointed time. Jeremiah 33:20, 25.

Also,

Renew our days as of old. Lamentations 5:21.

2010. Now because the word 'names means the essential nature, and also the knowledge of that nature, the meaning of the statement made in this verse becomes clear. That is to say, 'No longer will you be called by your name Abram, but your name will be Abraham' means, not what his nature had been previously but what it was going to be. The fact that Abram served other gods and worshipped the god Shaddai was shown above in 1992; but because he was to represent the Lord, and in particular His Internal Man, and so the celestial side of His love, his previous nature had to be effaced, that is, the name Abram had to be altered to another which was such that the Lord could be represented by means of it. The letter H therefore was taken from the name Jehovah - which letter alone in the name Jehovah entails the Divine, and means I AM or TO BE - and was inserted into his name, so that he was called Abraham. The same happened with Sarai further on; the same letter was added to her name, so that she was called Sarah. From this it also becomes clear that in the internal sense of the Word Abraham represents Jehovah or the Lord.

[2] It should be realized however that in representations no significance is attached to the nature or character of the one who represents, for in those representations no attention is paid to the person representing but to the thing which he represents, as stated and shown already in 665, 1097 (end), 1361. Therefore the meaning of the words here in the internal sense is that the Lord cast off the human and put on the Divine, which is also the particular point in the train of thought both before and after this statement, for the promise is now made concerning Isaac his son, who was to represent the Lord's Divine Rational.