Arcana Coelestia #480
480. It is clear from Genesis 1:26-27 as well, that 'they were called Man on the day in which they were created', that is to say, at the end of the sixth day, which answers to the evening of the Sabbath, or start of the Sabbath or seventh day. For as shown already, the seventh day or Sabbath is the celestial man.
Void
A 'void', or 'Vacuity' denotes a person's state before regeneration. From Arcana Coelestia 7: "The first state is the state which precedes, both the state existing from earliest childhood onwards and that existing immediately before regeneration; and it is called a void, emptiness, and thick darkness.
In Genesis 1:2, this signifies lacking good, as with man's state before regeneration. (Arcana Coelestia 17)
In Psalm 89:39, this signifies that the Jewish nation had destroyed its conjunction with the Lord and the church. (The Inner Meaning of the Prophets and Psalms 339)