Genesis 1:14 makes it eminently clear: the sun, moon and stars were provided to us as time pieces - primarily the sun, secondarily the moon, and then subsequently the stars.
I wish I could testify as to the source of this video. It was posted on a Telegram Channel without providing credit; nevertheless, it is brilliant!
In this short video, it offers testimony as to the size, distance, shape. The timing of the its cycle and its balance with the primary luminary.
It is well worth a few listens.