Arcana Coelestia #23
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.
Arcana Coelestia #434
434. Verse 25 And the man (homo) knew his wife again, and she bore a son, and she called his name Seth - for God has appointed me another seed in place of Abel, seeing that Cain had killed him.
'The man' and 'his wife' are here used to mean the new Church which earlier on was meant by 'Adah and Zillah'. 'Her son whose name she called Seth' means new faith, through which charity may be received 'God has appointed another seed in place of Abel, seeing that Cain had killed him' means that charity, which Cain separated and annihilated, was now conferred on this Church by the Lord.