as often said of the Bible, "more is being revealed to you than you can understand". In this case, our Jewish ancestors of 3500 years ago knew nothing of physics or the complementary nature of energy and matter. Trying to explain these to them in ancient Aramaic or Hebrew would have been impossible.

The more I learn about matter and energy being the same but in different forms and speed of motion, the more I can believe in souls. It will be the soul, currently energy, that will be transformed back into matter, the body, at the end of days. And not the exact same body at a specific age, but a body with the ability to extract nutrients from nothing more than sunlight and water, so as not to overly tax existing resources ( you shall know them when you see them -- the "returnees" as opposed to the still living).