The Bible gives the patriarchs before the Flood an average lifespan of 912 years. Adam lived to 930, Noah to 950 and Methuselah to 969. This video from Genesis Apologetics asks how that is possible. Their answer is genetic entropy, and the genetic bottleneck that Noah’s Flood created.
I go through the lifespans and the explanations on my page about how the human lifespan declines.
Video by Genesis Apologetics. Watch on YouTube.