How long have people been living on Earth? The evolutionist says millions of years. Bible believing Christians generally say only about 6,000 years. But the answer to this question is amazingly simple.


If we start with only two people, and they have four children who live to have their own children, the second generation now has twice as many people – four. Now, allowing for infant mortality and other human problems that keep population down, we still find that on the average it only takes about 130 years to double the Earth’s population. This figure fits into known historical records. And if anything, it’s a conservative number.

If human history is 2 million years, as the evolutionists say, the Earth ought to have a lot more people than it does now. Alternatively, if we accept the 2 million years, then it must have taken 125,000 years to double the population in order to finish with today’s world population. But that doesn’t make any sense at all, especially since human historical records show that the doubling time is about 1,000 times less!

But if we start with eight people and reckon that the population doubles every 130 years, we find that it takes only about 4,000 to 4,500 years to get a population of 1 billion. And that was the Earth’s population in the year 1800 – just about 4,200 years after the Flood, through which only eight people were saved to repopulate the Earth!

Genesis 6:8
“But Noah found grace in the eyes of the LORD.”

Prayer: Lord, even the growth of human population testifies to the truth of Your Word! Help me to remember that to You humanity is not a mass of people. Even though it numbers in the billions, each is an individual whom You are seeking with Your Word. For Jesus’ sake. Amen.

Notes: Weigand, Cleone H. 1985. “Morality remains the best way to stem population growth.” Milwaukee Journal, Apr. 14. Map: World map (

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