Why?
Do you even know that C14 is the best evidence that the Biblical description of long life?
Do you know it actually prove that the Atmosphere was very moist less than 4 000 years ago?
Do you know that the equlibrium of the Atmosphere in Biblical dating is 100% in sink with dating C14 / C13 ratios and is evidence that charcoal findings, and other organic material dated to 10 000 to 40 000 years actualy give dates of 4 to 5 thousand years?
No, I don't know those things. Because they are false.