The chiastic structure of the first half of Day Three, Genesis 1:9-10 (ESV)
A And God said, “Let the waters under the heavens be gathered together into one place,
B. and let the dry land appear”. And it was so.
B’. God called the dry land Earth,
A’. and the waters that were gathered together he called Seas. And God saw that it was good.
The chiastic structure of Day Four, Genesis 1:14-19
A.(14a) And God said, “Let there be lights in the firmament of the heaven to divide the day from the night;
B.(14b) and let them be for signs, and for seasons, and for days, and years:
C.(15) and let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.
D.(16a) And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.
C’.(17) And God set them in the firmament of the heaven to give light upon the earth,
B’.(18a) and to rule over the day and over the night,
A’.(18b) and to divide the light from the darkness: and God saw that it was good. And the evening and the morning were the fourth day.
The chiastic structure of Day Seven, Genesis 2:1-3 (ESV)
A. (1) Thus the heavens and the earth were finished, and all the host of them.
B. (2a) And on the seventh day God ended his work which he had made;
C. (2b) and he rested on the seventh day from all his work which he had made.
B’.(3) And God blessed the seventh day, and sanctified it:
A’. (3) because that in it he had rested from all his work which God created and made.
A. These are the generations [toledoth] of the heavens and the earth
B. when they were created [bara’]
B’. in the day that the LORD God [Yahweh Elohim] made [’asah]
A’. the earth and the heavens