Arcana Coelestia#43
43. Verse 22 And God blessed them, saying, Be fruitful and multiply, and fill the waters in the seas; and let birds be multiplied upon the earth.
Everything that has life in it from the Lord is fruitful and multiplies without limit. This does not happen during a person's lifetime, but in the next life it does so to an astonishing extent. In the Word 'to be fruitful' has reference to matters of love, while 'to multiply' has reference to matters of faith. The fruit of love contains the seed by which it multiplies itself to so great an extent. The Lord' s blessing also means, in the Word, fruitfulness and multiplication, for they are the outcome of that blessing.
Verse 23 And there was evening, and there was morning, a fifth day.
Apocalypse Explained#673
673. And in that hour.- That this signifies during that state, is evident from the signification of hour, as denoting state, in this case, therefore, that state when the two witnesses ascended into heaven, and their enemies saw them. Hour signifies state, because, in the Word, times, and all expressions referring to time, as hours, days, weeks, months, years, ages, and also morning, noon, evening, and night, as well as spring, summer, autumn, and winter, signify states of life. That such things are signified by times, is illustrated and shown in Heaven and Hell 162-169), where time in heaven is treated of, as also above in this work (n. 571, 610, 664); and that hour signifies some duration of state, greater and less, thus time and state, may be seen above (n. 194), and that the number employed determines the state as to its quality (n. 488).