Note: this proposal parallels the creation of Man with their naming . “in the day” links to Gen 2:4, “God created man” comes from to Gen 1:27, “In the likeness of God” is from Gen 1:26 and parallel with “blessed them” from Gen 1:28, “male and female” comes from Gen 1:27. The central point about Man being both male and female is emphasised in the genealogy that follows – “sons and daughters” occurs for each generation.
1 This is the book of the generations of Adam.
A. In the day that God created (Gen 2:4)
B. man (Adam),
C. in the likeness of God made he him (Gen 1:26);
D. 2 Male and female created he them (Gen 1:27);
C’. and blessed them (Gen 1:28),
B’. and called their name Adam,
A’. in the day when they were created (Gen 2:4).