In the Today's Word for January 3 and 5 we began investigating the age of individuals and found that before the worldwide flood the age of people mentioned was an average of 907 years old. After the flood that average began to deteriorate until it reached the prophecied age of 120 years and below. (Genesis 6:3b)
We also noted that human wickedness on the earth (Genesis 6:5) was the reason for the flood. God wanted to push the reset button and begin again with a faithful few which were Noah and his family, eight in all.
So, was there any natural cause and effect that God used to lessen the amount of years that man would live on the earth? My answer is yes. We have to go back to the creation of the world to understand this natural cause and effect.
God said on the second day of creation, "Let there be a space between the waters, to separate the waters of the heavens from the waters of the earth…God made this space to separate the waters of the earth from the waters of the heavens. God called the space 'sky.'" (Genesis 1:6-8) There was water on the earth in seas and oceans and there was water above the sky which cloaked the earth and gave it all a topical temperature.
Long life at the beginning of the world can be attributed to the "waters of the heavens," which were not rain in the clouds but an expanse of water above the earth that impeded the sun's rays from disseminating on the earth those rays which would be harmful to man. This would produce a hot house effect around the globe. There would be no ice caps at the top or bottom of the earth, for it would be naturally warm from top to bottom. This greenhouse effect could be the reason we find huge animals now buried in arctic areas that lived during the greenhouse years which we identify as the 1,656 years before the flood.
The nature of the flood waters in Noah's day came from two sources, the "underground waters" erupting from the earth, so noted as not to be confused with the already present seas separated from the land. (Genesis 1:9-10) And, the torrents of rain that fell from the sky, more than evaporated water from the seas, for that would not be able to cover the highest mountains as it says in Genesis 7:19. These "torrents" were the release of the "waters of the heavens" which were divided out on day 2 of creation.
So, the underground waters, joined with the sea waters already present, and also join the waters above the sky to inundate the whole earth, covering it completely. Actually putting it back into the same state it was in in Genesis 1:2. When Noah and his family came out of the ark, after a year in it, there was no longer any greenhouse effect on the earth which becomes one of the cause and effect reasons for the shorter lifespans.
So, getting this all in one sentence, the greenhouse effect contributed to the long lifespans before the flood, the wickedness of man caused God to bring the flood, and the lifespan of humanity was dropped because of the lack of greenhouse protection from the sun and these shorten lifespans God used to decrease the rate at which wickedness would grow.Consider God's perpetual interaction with nature, His creation, and His desired fellowship with man to be the overarching reasons for the flood. He no longer walked in the Garden with man and woman but would use individuals, like Noah and Abram, to fulfill His purpose on the earth and bring us to the time that was just right (Galatians 4:4) for God's Son to come into the world and save us all by his death and resurrection. Hallelujah!