Based on Genesis 1:14 chapters 7, 8 and Leviticus 23 Adam and Noah use the same lights to mark time. The Bible instructed Adam to use the lights to determine the seasons, days and years, but what lights did the creator God (GENESIS 1) tell the first people to use to mark time? What lights do you think they used?
https://www.biblegateway.com/passage/?search=Genesis%207%3A11-17&version=KJV
