Which explanation is based on empirical evidence? Ancient text reveals that the universe is about 6000 years old

Empirical evidence is evidence that is verified by observation or experience, rather than logic or theory.

Then an explanation is based in on empirical evidence is an explanation that uses a fact that was seen or experienced.

The case here:

"Ancient text reveals that the universe is about 6000 years old"

Is not empirical, because there is no observation or experience here, this is only a book that says the opinion of who wrote it.

An example of an empirical explanation would be:

"The universe is at least X years old because we can see remanents that are X years old"

the closer the planet is to the sun, the larger the gravity