Some people say these days of creation mean eons, or eras. Maybe not quite the eons defined by geologists, but still different phases.
Phase 1: Creation of universe.
Phase 2: Creation of sky and water (maybe hydrogen clouds in the universe)
Phase 3: Creation of land (earth), sea (water) and plants (potentially bacteria and phytoplankton)
Phase 4: Earth's atmosphere becomes transparent (as single celled photosynthetic bacteria cleaned up the air, allowing the sun, moon and stars to shine through.
Phase 5: Creation of birds and fish (life spreads on Earth)
Phase 6: Creation of animals and humans
Phase 7: God rests.
In Genesis 1 :
Day 3 - God creates plants
Day 4 God creates the sun and moon.
So then - how many billions of years do "some people" think the plants were around prior to the sun? How is that sort of belief "helping" them?
What scientists does that group of "some people" know of - claiming that the plants on Earth came about billions of years before the Sun in our solar system???
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In Genesis 1 what we have is this -- in the text.
Intro in Genesis 1 - God created everything. He is the creator of everything -- just like John 1 says.
Each day in Genesis is "a single evening and morning" - so then when part night and next part day.
Day 1 -- God creates light on Earth without identifying the light source.
Day 2 - God creates our atmosphere
Day 3 -- Dry land and plants created in a single evening and morning.
Day 4 -- TWO great lights created (Sun and moon)
Day 5 - Birds and fish created in a single evening and morning
Day 6 - all land animals and two humans created in a single evening and morning.
Gen 2:1-3 - the 7th day - a day of rest, sanctified.
Ex 20:11 hard wires all 7 days as literal days -- in actual legal code