I am not sure what you mean here. I get that you are arguing that our rights are derived from a supernatural authority, God, that has set forth commandments such as do not kill etc. which I agree to an extent in a philosophical manner. I am confused when you say about the "Being" that there is no contract and could squash me at any time? I think you are stating that a God would simply use his free will as he sees fit against me as I have not means of defending myself?
We all share this eternally evolving present moment- The past and future only exist as inconsequential mental fabrications.