The bible is the only true source. I just love your carbon dating machines for accuracy, oops, I mean inaccuracy. Common sense is all it takes to wipe out Evolution. The age of the earth you love to use is so inaccurate. Billions and billions of years ago you say, hardly. You and I were not there so you and I haven't a clue how old the earth is using your source for verification, because it's man made , and you and I being a man were not there to identify anything to use as a way of measuring other than what we have on the earth which you haven't a clue how old it is except for your man made toys which have such a drastic measure of inaccuracies. Data research has such a limit that it's only as accurate as man has been able to leave data from the past, that's all you have and to say something like billions of years being the age of the earth is pure folly, the bible's genealogy on the other hand is accurate.
We have multiple dating methods, and we use multiple dating methods just in case one dating method doesn't work. If we use two dating methods and the results are different, then we continue to use more dating methods. If one dating method points to 15,000 years and three others point to 800 years old, then we can safely conclude the material dated is around 800 years old.